Teaching guidelines +/- 15 minutes

Learn the basics of Spanish adjective agreement with examples showing how adjectives change to match the gender and number of the nouns they describe. Understand key rules such as changing adjective endings from '-o' to '-a' for feminine forms and adding '-s' to form plurals. This foundational lesson includes practical examples with adjectives describing physical appearance, helping beginners grasp essential grammar for correct expression.
  1. Adjectives agree in gender and number with the noun.
  2. Adjectives that end in "-o" change to "-a" for the feminine form.
  3. To form the plural, add an "-s" to adjectives that end in an unstressed vowel.
Terminación (Ending)Singular (Singular)Plural (Plural)
Masculino -o -os 

Alto (Tallo)

El niño es alto. (The boy is tall.)

Altos (Tallos)

Los niños son altos. (The children are tall.)

Femenino -a -as 

Alta (Talla)

La niña es alta. (The girl is tall.)

Altas (Tallas)

Las niñas son altas. (The girls are tall.)

Exercise 1: La concordancia de los adjetivos

Instruction: Fill in the correct word.

Show translation Show answers

pelirrojo, alta, corto, castaños, larga, bajo, morena, guapa

1.
Él tiene el pelo ....
(He has short hair.)
2.
Él se afeita la barba ....
(He shaves his long beard.)
3.
Ella es ..., mide casi dos metros.
(She is tall, she is almost two metres tall.)
4.
Mi hermano es más ... que yo. Yo soy más alta.
(My brother is shorter than me. I am taller.)
5.
La niña es muy ....
(The girl is very pretty.)
6.
Ella tiene el pelo de color ....
(She has red hair.)
7.
La chica ... es muy simpática.
(The dark-haired girl is very nice.)
8.
Mis ojos son ... como mi pelo.
(My eyes are brown like my hair.)

Exercise 2: Multiple Choice

Instruction: Choose the correct solution

1. La chica es ___ y tiene el pelo largo.

(The girl is ___ and has long hair.)

2. Los hombres son ___ y delgados.

(The men are ___ and thin.)

3. Las mujeres tienen los ojos castaños y son ___.

(The women have brown eyes and are ___.)

4. Mi padre es ___ y está afeitado hoy.

(My father is ___ and is shaved today.)

5. Ellas son ___ y se secan el pelo después de la ducha.

(They are ___ and dry their hair after the shower.)

6. El niño rubio es ___ y tiene el pelo corto.

(The blond boy is ___ and has short hair.)

Understanding Adjective Agreement in Spanish

This lesson focuses on adjective agreement (la concordancia de los adjetivos) in Spanish, an essential grammar topic at the A1 beginner level. You will learn how adjectives change to match the gender (masculine or feminine) and number (singular or plural) of the nouns they describe.

Basic Rules of Agreement

  • Adjectives ending in -o change to -a to agree with feminine nouns. For example, alto (tall) becomes alta when referring to a girl or feminine noun.
  • To form the plural of adjectives ending in an unstressed vowel, add -s. So, alto becomes altos for masculine plural, and alta becomes altas for feminine plural.

Examples

Consider the following:

  • El niño es alto. (The boy is tall.)
  • La niña es alta. (The girl is tall.)
  • Los niños son altos. (The boys are tall.)
  • Las niñas son altas. (The girls are tall.)

Important Notes:

Unlike English adjectives, Spanish adjectives must agree with the noun in gender and number. In English, the adjective "tall" remains the same whether describing a boy, girl, or group. In Spanish, endings change to reflect gender and plurality. This concept takes some practice but is key to speaking and writing correctly.

Some useful phrases and vocabulary from this lesson:

  • Alto / Alta / Altos / Altas – tall
  • Niño / Niña – boy / girl
  • Los / Las – the (plural masculine / plural feminine)

Mastering adjective agreement will enhance your ability to form clear and grammatically correct sentences about people and things.

Written by

This content has been designed and reviewed by the coLanguage pedagogical team: About coLanguage