Spanish Adjective Agreement and Basic Placement

Spanish adjective agreement and basic placement

Spanish adjectives describe nouns, but they also usually change to match the noun in gender and number. This is called adjective agreement.

In this lesson, you will learn the basic agreement patterns and the most common beginner word order: noun + adjective.

Adjectives usually match the noun they describe

When an adjective has masculine and feminine forms, the ending changes to agree with the noun.

• el libro rojo — the red book
• la casa roja — the red house
• el hotel pequeño — the small hotel
• la habitación pequeña — the small room

The adjective changes because the noun changes. Rojo becomes roja with the feminine noun casa, and pequeño becomes pequeña with the feminine noun habitación.

Masculine singular adjectives ending in -o

Many common adjectives have a masculine singular form ending in -o.

• rojo — red
• pequeño — small
• bonito — pretty / nice

With masculine singular nouns, use the masculine singular adjective form.

• el libro rojo — the red book
• el hotel pequeño — the small hotel
• el café bonito — the nice café

Changing -o to -a with feminine singular nouns

Many adjectives ending in -o change to -a with a feminine singular noun.

• rojo — red → roja — red
• pequeño — small → pequeña — small
• bonito — pretty / nice → bonita — pretty / nice

Compare:

• el libro rojo — the red book
• la mesa roja — the red table
• el hotel pequeño — the small hotel
• la casa pequeña — the small house

The adjective agrees with the noun, not with the person speaking.

Making adjective phrases plural

The adjective must also match the noun in number. When the noun becomes plural, the adjective normally becomes plural too.

• el libro rojo — the red book → los libros rojos — the red books
• la mesa roja — the red table → las mesas rojas — the red tables
• el hotel pequeño — the small hotel → los hoteles pequeños — the small hotels
• la casa pequeña — the small house → las casas pequeñas — the small houses

Notice that the article, noun, and adjective all reflect plural number.

Agreement across the whole noun phrase

A complete noun phrase often contains an article, noun, and adjective. These parts should work together.

Gender and number	Example
masculine singular	el libro rojo — the red book
feminine singular	la mesa roja — the red table
masculine plural	los libros rojos — the red books
feminine plural	las mesas rojas — the red tables

Learning to check the whole phrase helps prevent mismatches such as a plural noun with a singular adjective.

Adjectives that do not change between masculine and feminine

Not every adjective has separate -o and -a forms. Many adjectives keep the same singular form with masculine and feminine nouns.

• grande — big / large
• interesante — interesting

Compare:

• el hotel grande — the large hotel
• la casa grande — the large house
• el libro interesante — the interesting book
• la historia interesante — the interesting story

These adjectives still change for plural number.

• los hoteles grandes — the large hotels
• las casas grandes — the large houses
• los libros interesantes — the interesting books
• las historias interesantes — the interesting stories

Adjectives ending in a consonant

Some common adjectives end in a consonant and may use the same form for masculine and feminine nouns.

• fácil — easy

Compare:

• el libro fácil — the easy book
• la pregunta fácil — the easy question
• los libros fáciles — the easy books
• las preguntas fáciles — the easy questions

For now, learn familiar adjective forms as complete vocabulary and notice whether they change for gender.

Basic adjective placement after the noun

A very common beginner pattern in Spanish is noun + adjective.

• un libro rojo — a red book
• una casa pequeña — a small house
• un hotel grande — a large hotel
• una pregunta fácil — an easy question

This order may feel different from English, where the adjective often comes before the noun.

For the basic descriptive uses in this lesson, place the adjective after the noun.

Comparing English and Spanish word order

English	Spanish
a red book	un libro rojo — a red book
a small house	una casa pequeña — a small house
a large hotel	un hotel grande — a large hotel
an interesting book	un libro interesante — an interesting book

Spanish adjective placement has more possibilities than this basic pattern, but you do not need the full system yet. Noun + adjective is the core placement to use in the descriptions covered here.

Using adjectives after ser

You can also describe a noun or person with ser + adjective. The adjective still agrees with the person or thing being described.

• El libro es rojo. — The book is red.
• La mesa es roja. — The table is red.
• Los libros son rojos. — The books are red.
• Las mesas son rojas. — The tables are red.

The adjective does not stop agreeing just because it comes after ser.

Agreement with people

The same agreement pattern applies when an adjective describes a person.

• Carlos es mexicano. — Carlos is Mexican.
• Ana es mexicana. — Ana is Mexican.
• Carlos y Luis son mexicanos. — Carlos and Luis are Mexican.
• Ana y Marta son mexicanas. — Ana and Marta are Mexican.

You have already seen nationality adjectives. Now you can recognize that their endings follow the same basic agreement principle.

Mixed groups and the masculine plural form

In standard grammatical agreement, a group that includes masculine and feminine members normally takes the masculine plural form.

• Carlos y Luis son mexicanos. — Carlos and Luis are Mexican.
• Ana y Marta son mexicanas. — Ana and Marta are Mexican.
• Carlos y Ana son mexicanos. — Carlos and Ana are Mexican.

For this lesson, focus on recognizing and producing this standard agreement pattern.

Checking adjective agreement step by step

When you build a phrase with an adjective, identify the noun first.

1. Is the noun masculine or feminine?
2. Is the noun singular or plural?
3. Does the adjective have separate masculine and feminine forms?
4. Make the adjective match the noun.
5. Place the adjective after the noun in the basic descriptive pattern used here.

For example, start with la casa — the house. It is feminine singular. With pequeño — small, change the adjective to pequeña. The result is la casa pequeña — the small house.

Correcting common agreement errors

Compare these correct phrases:

• la mesa roja — the red table
• los libros rojos — the red books
• las casas pequeñas — the small houses
• los hoteles grandes — the large hotels

Do not leave the adjective in a default masculine singular form when the noun requires another form. Agreement belongs to the complete phrase.

From adjective agreement to describing appearance and personality

You can now make basic Spanish adjectives agree with nouns in gender and number and place common descriptive adjectives after the noun. The next lesson applies this system to useful vocabulary for describing people’s appearance and personality.