Descriptive Adjectives and Adjectives of Nationality

Descriptive adjectives are generally placed after the nouns they modify, and they much in agreement (gender and number) with those nouns.

Descriptive adjectives ending in -o:

Descriptive adjectives ending in -o in the masculine singular form have four forms: -o, -a, -os, and -as.

||| ||| |Un alumno serio|una alumna seria| |Dos alumnos serios|Dos alumnas serias|

Descriptive adjectives ending in -dor:

Descriptive adjectives ending in -dor also have four forms: -dor, -dora, -dores, and -doras.

||| ||| |Un alumno trabajador|Una alumna tradajadora| |Dos alumnos trabajadores|Dos alumnas trabajadoras|

Descriptive adjectives ending in -ón:

Descriptive adjectives ending in -ón have four forms as well: -ón, -ona, -ones, and -onas.

||| ||| |Un amigo comilón|Una amiga comilona| |Dos amigos comilones|Dos amigas comilonas|

Adjectives of nationality ending in a consonant also have four forms:

||| ||| |Un profesor español|Una profesora española| |Dos prfesores españoles|Dos profesoras españolas|

Other adjectives:

Other adjectives have the same form for both masculine and feminine, but they must show number (singular or plural). If they end in a vowel, you must add an -s. If they end in a consonant, you must add -es.

||| ||| |Un profesor popular|Una profesora popular| |Dos profesores populares|Dos profesoras populares|