Spanish Grammar/Masculine and feminine endings, guidelines

In Spanish, all nouns are either masculine or feminine. Masculine nouns ultilize the singular article el, and the plural article los. Feminine articles utilize the singular article la and the plural article las.

Nouns ending in -o are usually masculine. Nouns ending in -a are usually feminine.

Endings

Masculine Endings

Nouns that end in -o, -ma, -pa, -ta, -l, -n, s, -aje, or an accented vowel are usually male.

El libro	The book
El teléfono	The phone
El huevo	The egg
El vestido	The dress

–ma, -pa, or –ta

El papa	The Pope
El sistema	The system
El planeta	The planet

–l, -n, -r, and singular nouns that end in -s

El arbol	The tree
El atún	The tuna
El rencor	The resentment
El autobus	The bus

-aje

El viaje	The trip
El porcentaje	The percentage
El equipaje	The equipment
El personaje	The character

Ending in an accented vowel

El colibrí	The hummingbird
El bambú	The bamboo
El menú	The menu
El café	The coffee