Introduction to Adjective Agreement

In Spanish, adjectives must agree with the nouns they describe in both gender (masculine or feminine) and number (singular or plural). This agreement ensures that sentences are grammatically correct and sound natural. Unlike English, where adjectives remain the same regardless of the noun, Spanish changes the form of the adjective to match the noun.

El coche rojo

El koh-cheh roh-hoh

The red car

La casa roja

Lah kah-sah roh-hah

The red house

Gender Agreement

Adjectives change their endings to match the gender of the noun. Masculine adjectives often end in -o while feminine adjectives typically end in -a. When the adjective ends in -o, change it to -a to agree with feminine nouns.

El chico alto

El chee-koh al-toh

The tall boy

La chica alta

Lah chee-kah al-tah

The tall girl

Note: Some adjectives have the same form for both genders, as we will see later.

Number Agreement

Adjectives must also agree in number with the noun. Add -s to adjectives ending in a vowel and -es to those ending in a consonant to form the plural.

SingularPlural
alto (masc. sing.)altos (masc. plural)
alta (fem. sing.)altas (fem. plural)

Los perros grandes

Los peh-rros grahn-des

The big dogs

Las casas grandes

Lahs kah-sahs grahn-des

The big houses

Adjectives Ending in -o and -a

Adjectives that end in -o have four forms to agree with both gender and number:

Gender/NumberExample: bonito (pretty)
Masculine Singularbonito
Feminine Singularbonita
Masculine Pluralbonitos
Feminine Pluralbonitas

Un vestido bonito

Oon ves-tee-doh boh-nee-toh

A pretty dress

Unos vestidos bonitos

Oo-nos ves-tee-dos boh-nee-tos

Some pretty dresses

Adjectives Ending in -e or Consonants

Adjectives ending in -e or consonants usually have the same form for masculine and feminine singular, but they change for plural by adding -s or -es respectively.

El estudiante inteligente

El es-too-dee-ahn-te in-teh-lee-hen-te

The intelligent student (male)

La estudiante inteligente

Lah es-too-dee-ahn-te in-teh-lee-hen-te

The intelligent student (female)

For plural:

SingularPlural
inteligenteinteligentes
fácilfáciles

Los estudiantes inteligentes

Los es-too-dee-ahn-tes in-teh-lee-hen-tes

The intelligent students (male or mixed)

Las estudiantes inteligentes

Lahs es-too-dee-ahn-tes in-teh-lee-hen-tes

The intelligent students (female)

Position of Adjectives

Most Spanish adjectives come after the noun they modify, unlike English. However, some adjectives can come before the noun to add emphasis or change meaning.

Una casa blanca

Oo-nah kah-sah blahn-kah

A white house

Una gran idea

Oo-nah grahn ee-deh-ah

A great idea

Note: When grande comes before a singular noun, it is shortened to gran.

Practice Examples

Try identifying the correct adjective agreement in these sentences:

Los libros interesantes

Los lee-bros in-teh-reh-sahn-tes

The interesting books

Las flores bonitas

Lahs floh-res boh-nee-tas

The pretty flowers

El perro pequeño

El peh-rro peh-keh-nyoh

The small dog

Las casas pequeñas

Lahs kah-sahs peh-keh-nyas

The small houses

Tips for Remembering Rules

  • Focus on the noun’s gender and number first, then match the adjective accordingly.
  • Remember that adjectives ending in -o have four forms; practice these regularly.
  • Adjectives ending in -e or consonants are easier,only change for plural.
  • Practice with common adjectives to internalize the patterns.
  • Pay attention to adjective position, as it can affect meaning and emphasis.
  • Use flashcards with adjective forms and example sentences for faster recall.