In Spanish, gender agreement means that all parts of a sentence connected to a noun must share the same gender. Nouns are either masculine or feminine, and adjectives, articles, and sometimes even verbs change form to match the noun's gender.
  • Nouns: Masculine or feminine
  • Adjectives, articles, etc.: Must match the noun they modify
  • Agreement includes both gender and number

Nouns and Their Genders

Spanish nouns have a gender: masculine or feminine. Most nouns ending in -o are masculine, and those ending in -a are feminine, but there are exceptions.
  • Typical masculine endings: -o, -ma, -s
  • Typical feminine endings: -a, -ción, -sión, -dad
GenderCommon EndingsExample Nouns
Masculine-o, -ma, -sel libro, el problema, el mes
Feminine-a, -ción, -sión, -dadla casa, la canción, la ciudad
Feminine nouns often end in -ción, -sión, or -dad.

Articles and Gender Agreement

Definite and indefinite articles change to match the noun's gender (and number).
TypeMasculineFeminine
Definiteella
Indefiniteununa
Examples:
  • el libro (the book - masculine)
  • la mesa (the table - feminine)
  • un chico (a boy - masculine)
  • una chica (a girl - feminine)
Definite articles are 'el' for masculine and 'la' for feminine.

Adjective Agreement

Adjectives must agree in both gender and number with the nouns they describe.
  • Most adjectives ending in -o change to -a for feminine (and add -s/-as for plural): alto/alta
  • Adjectives ending in -e or a consonant usually stay the same for gender but add -s for plural: inteligente → inteligentes
NounAdjective (Singular)Adjective (Plural)
Masculinealtoaltos
Femininealtaaltas
Common (e)inteligenteinteligentes
Examples:
  • chico alto / chica alta (tall boy / tall girl)
  • libros interesantes (interesting books)
  • mesas grandes (big tables)
For two girls, 'alto' becomes 'altas' to match feminine plural.

Conclusion

Gender agreement is a cornerstone of Spanish grammar, ensuring that the components of a sentence are harmoniously matched.
  • Nouns have genders: masculine or feminine.
  • Articles and adjectives must change to match the noun's gender and number.
  • Recognizing patterns in endings helps master gender agreement.
Both adjectives and articles must agree with the noun.
The feminine article for a singular noun is 'la'.
Feminine nouns often end in -a, -ción, or -dad.