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Forming the plural of masculine and feminine adjectives ending in -án, ón, -or

Most Spanish adjectives that end in -ón, -án, or -or follow the same rule to form their masculine and feminine plurals:

For masculine plural add -es
For feminine plural add -as
See how it changes from singular to plural:
Un hombre simplón (A foolish man)
Unos hombres simplones (some foolish men)
Unas mujeres simplonas (some foolish women)
Un hombre holgazán (A lazy man)
Unos hombres holgazanes (Some lazy men)
Unas mujeres holgazanas (Some lazy women)
Notice how the plurals do not have an accent [´]

Un hombre trabajador (A hardworking man)
Unos hombres trabajadores (Some hardworking men)
Unas mujeres trabajadoras (Some hardworking women)

This particular group of adjectives ending in -or, that apply this rule for the plurals, are those that derive from a verb (e.g trabajador derives from verb trabajar). There are other adjectives ending in -r that follow a different rule. See also Forming comparative adjectives mayor/menor/mejor/peor.

Here are more examples:

¡Qué cabezón eres, Pedro! Tus hermanas no son tan cabezonas.
How stubborn you can be, Pedro! Your sisters are not so stubborn.

Ramiro es haragán, aunque sus primos son más haraganes.
Ramiro is lazy, although his cousins are more lazy.

Matías es trabajador pero vosotros no sois trabajadores.
Matías is hardworking but you are not hardworking.

An exception to this rule is adjective marrón (brown) which only has two forms:

Singular masculine and feminine: marrón

He comprado un bolso marrón. (I have bought a brown handbag.)

He comprado una camisa marrón . (I have bought a brown shirt.)

Plural masculine and feminine: marrones

He comprado unos bolsos marrones. (I have bought some brown handbags.)

He comprado unas camisas marrones . (I have bought some brown shirts.)

Learn more about these related Spanish grammar topics

Examples and resources

Matías es trabajador pero vosotros no sois trabajadores.
Matías is hardworking but you are not hardworking.


Ramiro es haragán, aunque sus primos son más haraganes.
Ramiro is lazy, although his cousins are more lazy.


¡Qué cabezón eres, Pedro! Tus hermanas no son tan cabezonas.
How stubborn you can be, Pedro! Your sisters are not so stubborn.


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