Spanish Noun Gender and Plurals

Short answer

Most nouns ending in -o are masculine and most ending in -a are feminine, with a known set of exceptions (el problema, el día, la mano). Add -s after a vowel and -es after a consonant.

Level A1 · nouns

The rule in full

Every noun is masculine or feminine.

EndingUsuallyExample
-omasculineel libro
-afemininela casa
-ción, -sión, -dad, -tadfemininela canción, la ciudad
-ma (Greek origin)masculineel problema, el tema

Plurals

Word ends inAddExample
vowel-slibro → libros
consonant-esciudad → ciudades
-z-ceslápiz → lápices

Exceptions: el día, la mano, el mapa, la foto (from fotografía).

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