Avisar Conjugation | How to Conjugate Avisar in Spanish

Avisar means “to notify,” “to warn,” or “to let someone know.” You will learn its fully regular -AR conjugation and its main person, event, warning, and service-call patterns.

Avisar conjugation at a glance

Verb type: Regular AR. RAE gives aviso, avisas, avisa, avisamos, avisáis, avisan. Its gerund avisando and participle avisado are regular.

Avisar gerund, past participle, and infinitive

The infinitive names the verb, the gerund supports progressive constructions, and the past participle combines with haber in compound forms. The participle avisado remains invariant in those compounds.

Form	Spanish	Natural English guide
Infinitive	avisar	to notify / warn
Gerund	avisando	notifying / warning
Past participle	avisado	notified / warned

Avisar meaning and essential uses

Avisar is transitive and can mean informing someone of a fact: Aviso a Marta del cambio. — “I notify Marta of the change.” RAE also records warning or advising someone.

It is also used for calling someone to provide a service: Avisaron al electricista. — “They called the electrician.” Common frames include avisar a alguien de algo and avisar que + clause.

Avisar regular conjugation pattern

The stem avis- remains unchanged throughout the core paradigm. Forms such as aviso, avisé, and avise take ordinary -AR endings.

There is no stem change, spelling alternation, irregular preterite stem, irregular future stem, irregular gerund, or irregular participle.

Avisar indicative and periphrastic conjugations

Avisar present tense conjugation

Present indicative (el presente de indicativo) — Use it for current situations, habits, facts, and contextually near-future reference. The table uses the verified paradigm.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	aviso	I notify / warn
Tú — you, singular informal	avisas	you notify / warn
Él / Ella / Usted — he / she / you, singular formal	avisa	he / she notifies / warns; you notify / warn (formal)
Nosotros / Nosotras — we	avisamos	we notify / warn
Vosotros / Vosotras — you, plural informal, mainly Spain	avisáis	you notify / warn (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisan	they notify / warn; you notify / warn (plural)

• Aviso a Marta del cambio. — I notify Marta of the change.

Avisar preterite conjugation

Preterite (el pretérito perfecto simple / pretérito indefinido) — Use it for completed or bounded past events. The table uses the verified paradigm.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avisé	I notified / warned
Tú — you, singular informal	avisaste	you notified / warned
Él / Ella / Usted — he / she / you, singular formal	avisó	he / she notified / warned; you notified / warned (formal)
Nosotros / Nosotras — we	avisamos	we notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	avisasteis	you notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisaron	they notified / warned; you notified / warned (plural)

• Ayer avisé al técnico. — Yesterday I notified the technician.

Avisar imperfect conjugation

Imperfect (el pretérito imperfecto) — Use it for habitual, descriptive, background, or ongoing past situations. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avisaba	I used to notify / warn / was notifying / warning
Tú — you, singular informal	avisabas	you used to notify / warn / were notifying / warning
Él / Ella / Usted — he / she / you, singular formal	avisaba	he / she used to notify / warn / was notifying / warning; you used to notify / warn / were notifying / warning (formal)
Nosotros / Nosotras — we	avisábamos	we used to notify / warn / were notifying / warning
Vosotros / Vosotras — you, plural informal, mainly Spain	avisabais	you used to notify / warn / were notifying / warning (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisaban	they used to notify / warn / were notifying / warning; you used to notify / warn / were notifying / warning (plural)

• Antes avisábamos por teléfono. — We used to notify people by phone.

Avisar present progressive

Present progressive — This verbal periphrasis focuses on an action or process in progress. Form it with present estar plus avisando.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	estoy avisando	I am notifying / warning
Tú — you, singular informal	estás avisando	you are notifying / warning
Él / Ella / Usted — he / she / you, singular formal	está avisando	he / she is notifying / warning; you are notifying / warning (formal)
Nosotros / Nosotras — we	estamos avisando	we are notifying / warning
Vosotros / Vosotras — you, plural informal, mainly Spain	estáis avisando	you are notifying / warning (plural)
Ellos / Ellas / Ustedes — they / you, plural	están avisando	they are notifying / warning; you are notifying / warning (plural)

• Estoy avisando a todos los participantes. — I am notifying all the participants.

Avisar near future conjugation

Near future — This verbal periphrasis expresses an intention, plan, or expected event. Form it with present ir + a + avisar.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	voy a avisar	I am going to notify / warn
Tú — you, singular informal	vas a avisar	you are going to notify / warn
Él / Ella / Usted — he / she / you, singular formal	va a avisar	he / she is going to notify / warn; you are going to notify / warn (formal)
Nosotros / Nosotras — we	vamos a avisar	we are going to notify / warn
Vosotros / Vosotras — you, plural informal, mainly Spain	vais a avisar	you are going to notify / warn (plural)
Ellos / Ellas / Ustedes — they / you, plural	van a avisar	they are going to notify / warn; you are going to notify / warn (plural)

• Voy a avisar al médico. — I am going to call the doctor.

Avisar future tense conjugation

Simple future (el futuro simple) — Use it for future reference and, where useful, probability. The table uses the verified paradigm.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avisaré	I will notify / warn
Tú — you, singular informal	avisarás	you will notify / warn
Él / Ella / Usted — he / she / you, singular formal	avisará	he / she will notify / warn; you will notify / warn (formal)
Nosotros / Nosotras — we	avisaremos	we will notify / warn
Vosotros / Vosotras — you, plural informal, mainly Spain	avisaréis	you will notify / warn (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisarán	they will notify / warn; you will notify / warn (plural)

• Avisaremos cuando lleguemos. — We will let you know when we arrive.

Avisar conditional conjugation

Conditional (el condicional simple) — Use it for hypothetical outcomes, softened statements, or related conditional meanings. The table uses the verified paradigm.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avisaría	I would notify / warn
Tú — you, singular informal	avisarías	you would notify / warn
Él / Ella / Usted — he / she / you, singular formal	avisaría	he / she would notify / warn; you would notify / warn (formal)
Nosotros / Nosotras — we	avisaríamos	we would notify / warn
Vosotros / Vosotras — you, plural informal, mainly Spain	avisaríais	you would notify / warn (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisarían	they would notify / warn; you would notify / warn (plural)

• Avisaría antes de hacer ese cambio. — I would give notice before making that change.

Avisar present perfect conjugation

Present perfect (el pretérito perfecto compuesto) — Use it for completed events connected to a present reference frame; regional distribution varies. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	he avisado	I have notified / warned
Tú — you, singular informal	has avisado	you have notified / warned
Él / Ella / Usted — he / she / you, singular formal	ha avisado	he / she has notified / warned; you have notified / warned (formal)
Nosotros / Nosotras — we	hemos avisado	we have notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	habéis avisado	you have notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	han avisado	they have notified / warned; you have notified / warned (plural)

• He avisado a todo el equipo. — I have notified the whole team.

Avisar past perfect conjugation

Past perfect (el pretérito pluscuamperfecto) — Use it for an event completed before another past reference point. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	había avisado	I had notified / warned
Tú — you, singular informal	habías avisado	you had notified / warned
Él / Ella / Usted — he / she / you, singular formal	había avisado	he / she had notified / warned; you had notified / warned (formal)
Nosotros / Nosotras — we	habíamos avisado	we had notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	habíais avisado	you had notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	habían avisado	they had notified / warned; you had notified / warned (plural)

• Ya habíamos avisado del problema. — We had already warned about the problem.

Avisar future perfect conjugation

Future perfect (el futuro perfecto) — Use it for an event expected to be completed before a future reference point. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	habré avisado	I will have notified / warned
Tú — you, singular informal	habrás avisado	you will have notified / warned
Él / Ella / Usted — he / she / you, singular formal	habrá avisado	he / she will have notified / warned; you will have notified / warned (formal)
Nosotros / Nosotras — we	habremos avisado	we will have notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	habréis avisado	you will have notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	habrán avisado	they will have notified / warned; you will have notified / warned (plural)

• Para entonces habrán avisado a todos. — By then they will have notified everyone.

Avisar conditional perfect conjugation

Conditional perfect (el condicional compuesto) — Use it for a hypothetical completed outcome. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	habría avisado	I would have notified / warned
Tú — you, singular informal	habrías avisado	you would have notified / warned
Él / Ella / Usted — he / she / you, singular formal	habría avisado	he / she would have notified / warned; you would have notified / warned (formal)
Nosotros / Nosotras — we	habríamos avisado	we would have notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	habríais avisado	you would have notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	habrían avisado	they would have notified / warned; you would have notified / warned (plural)

• Habría avisado antes con más información. — I would have warned earlier with more information.

Avisar subjunctive conjugations

Avisar present subjunctive conjugation

Present subjunctive (el presente de subjuntivo) — Use it in subordinate environments involving wishes, influence, emotion, doubt or denial, evaluation, necessity, possibility, or non-specific reference. The table uses the verified paradigm.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avise	that I notify / warn
Tú — you, singular informal	avises	that you notify / warn
Él / Ella / Usted — he / she / you, singular formal	avise	that he / she notify / warn; that you notify / warn (formal)
Nosotros / Nosotras — we	avisemos	that we notify / warn
Vosotros / Vosotras — you, plural informal, mainly Spain	aviséis	that you notify / warn (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisen	that they notify / warn; that you notify / warn (plural)

• Quiero que avises a Marta. — I want you to notify Marta.

Avisar imperfect subjunctive conjugation

Imperfect subjunctive (el imperfecto de subjuntivo) — The main table uses the -ra series. The accepted -se series is also valid in many contexts and is demonstrated after the table. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avisara	that I notified / warned
Tú — you, singular informal	avisaras	that you notified / warned
Él / Ella / Usted — he / she / you, singular formal	avisara	that he / she notified / warned; that you notified / warned (formal)
Nosotros / Nosotras — we	avisáramos	that we notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	avisarais	that you notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisaran	that they notified / warned; that you notified / warned (plural)

• Preferían que avisáramos al técnico. — They preferred that we notify the technician.
• Era mejor que avisases antes de salir. — It was better for you to let us know before leaving.

Avisar future subjunctive conjugation

Future subjunctive (el futuro de subjuntivo) — Rare in modern everyday Spanish. It survives mainly in formal, legal, proverbial, literary, or historical contexts. These rare reference forms belong mainly to formal, legal, proverbial, literary, or historical registers.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	avisare	if / when I should notify / warn
Tú — you, singular informal	avisares	if / when you should notify / warn
Él / Ella / Usted — he / she / you, singular formal	avisare	if / when he / she should notify / warn; if / when you should notify / warn (formal)
Nosotros / Nosotras — we	avisáremos	if / when we should notify / warn
Vosotros / Vosotras — you, plural informal, mainly Spain	avisareis	if / when you should notify / warn (plural)
Ellos / Ellas / Ustedes — they / you, plural	avisaren	if / when they should notify / warn; if / when you should notify / warn (plural)

• Quien avisare de una incidencia deberá indicar la hora. — Whoever should report an incident must indicate the time.

Avisar present perfect subjunctive conjugation

Present perfect subjunctive (el pretérito perfecto de subjuntivo) — Use it when a completed event appears inside a present- or future-oriented subjunctive environment. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	haya avisado	that I have notified / warned
Tú — you, singular informal	hayas avisado	that you have notified / warned
Él / Ella / Usted — he / she / you, singular formal	haya avisado	that he / she has notified / warned; that you have notified / warned (formal)
Nosotros / Nosotras — we	hayamos avisado	that we have notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	hayáis avisado	that you have notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	hayan avisado	that they have notified / warned; that you have notified / warned (plural)

• Me alegra que hayas avisado. — I am glad that you let us know.

Avisar past perfect subjunctive conjugation

Past perfect subjunctive (el pluscuamperfecto de subjuntivo) — The main table uses hubiera; hubiese is an accepted auxiliary alternative in many contexts and is demonstrated after the table. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	hubiera avisado	that I had notified / warned
Tú — you, singular informal	hubieras avisado	that you had notified / warned
Él / Ella / Usted — he / she / you, singular formal	hubiera avisado	that he / she had notified / warned; that you had notified / warned (formal)
Nosotros / Nosotras — we	hubiéramos avisado	that we had notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	hubierais avisado	that you had notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	hubieran avisado	that they had notified / warned; that you had notified / warned (plural)

• Si hubiera avisado antes, habríamos podido ayudar. — If I had warned earlier, we could have helped.
• Si hubieses avisado al técnico, habría venido. — If you had notified the technician, he / she would have come.

Avisar future perfect subjunctive conjugation

Future perfect subjunctive (el futuro perfecto de subjuntivo) — Rare in modern everyday Spanish. Treat it as a formal or historical reference form, not an everyday conversational target. Form it with the appropriate form of haber plus invariant avisado.

Pronoun and English meaning	Spanish	Natural English guide
Yo — I	hubiere avisado	if / when I should have notified / warned
Tú — you, singular informal	hubieres avisado	if / when you should have notified / warned
Él / Ella / Usted — he / she / you, singular formal	hubiere avisado	if / when he / she should have notified / warned; if / when you should have notified / warned (formal)
Nosotros / Nosotras — we	hubiéremos avisado	if / when we should have notified / warned
Vosotros / Vosotras — you, plural informal, mainly Spain	hubiereis avisado	if / when you should have notified / warned (plural)
Ellos / Ellas / Ustedes — they / you, plural	hubieren avisado	if / when they should have notified / warned; if / when you should have notified / warned (plural)

• Si hubieren avisado de nuevos riesgos, deberán documentarlos. — If they should have warned of new risks, they must document them.

Avisar imperative and commands

Commands address another person directly. The nosotros/nosotras row is a present-subjunctive form used with exhortative “let’s…” value.

Avisar affirmative commands

Use the verified affirmative command forms for direct instructions when the target meaning supports them naturally.

Pronoun and English meaning	Spanish	Natural English guide
Tú — you, singular informal	avisa	notify
Usted — you, singular formal	avise	notify (formal)
Nosotros / Nosotras — we; let’s…	avisemos	let’s notify
Vosotros / Vosotras — you, plural informal, mainly Spain	avisad	notify (plural, mainly Spain)
Ustedes — you, plural	avisen	notify (plural)

• Avisa cuando llegues. — Let me know when you arrive.

Avisar negative commands

Negative commands use subjunctive-based forms, with no before the verb.

Pronoun and English meaning	Spanish	Natural English guide
Tú — you, singular informal	no avises	do not notify
Usted — you, singular formal	no avise	do not notify (formal)
Nosotros / Nosotras — we; let’s…	no avisemos	let’s not notify
Vosotros / Vosotras — you, plural informal, mainly Spain	no aviséis	do not notify (plural, mainly Spain)
Ustedes — you, plural	no avisen	do not notify (plural)

• No avises a nadie hasta confirmar la información. — Do not notify anyone until you confirm the information.

Common constructions with Avisar

These patterns show sentence frames that materially affect how the target verb is used.

• avisar a alguien. — to notify / call someone.
• avisar a alguien de algo. — to warn / inform someone about something.
• avisar que + clause. — to notify / say that something is the case.
• avisar al médico / técnico / electricista. — to call a service professional.

Example sentences with Avisar

These examples reinforce useful forms and contexts already taught in the lesson.

• Te aviso mañana. — I will let you know tomorrow.
• Avisaron que el vuelo se retrasaría. — They announced that the flight would be delayed.
• ¿Puedes avisar a Ana? — Can you notify Ana?
• Espero que avises si cambia algo. — I hope you let us know if anything changes.
• Ya hemos avisado al responsable. — We have already notified the person in charge.
• Avisa primero a recepción. — Notify reception first.

Regional and usage notes for Avisar

The core tables retain tú, usted, vosotros/vosotras, and ustedes. Voseo changes some second-person singular forms where vos is used.

• Vos avisás cuando llegás. — You let us know when you arrive. (voseo)
• Avisá al técnico ahora. — Call the technician now. (affirmative vos command)

Avisar is fully regular. The main learner focus is complement structure: identify who is notified and, when needed, introduce the information or warning with de or a following clause.