Using otro, otra, otros, otras to say another, other (indefinite adjectives)

Spanish otro, otra, otros, otras

In Spanish, to express another or other we use the indefinite adjective otro.

It agrees in gender and number with the noun it accompanies:

Indefinite Adjective 

Masculine Feminine

Singular 

otro
another
otra
another

Plural

otros
other

otras
other

Have a look and listen to the following examples:

Voy a comprar otra lámpara. Esta no me gusta.I am going to buy another lamp. I don't like this one.

Necesitas otro sombrero.You need another hat.

Debes salir con otros chicos.You must hang out with other boys.

Mi hija prefiere otras asignaturas.My daughter prefers other subjects.

Be careful! A very common mistake is to add un or una in front of otro/otra:

Por favor, otra cerveza.
Por favor, una otra cerveza.
Please, (can I have) another beer.

 See also Using otro, otra, otros, otras to say another/another one, other, others (indefinite pronouns).

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Examples and resources

Voy a comprar otra lámpara. Esta no me gusta.I am going to buy another lamp. I don't like this one.
Necesitas otro sombrero.You need another hat.
Mi hija prefiere otras asignaturas.My daughter prefers other subjects.
Debes salir con otros chicos.You must hang out with other boys.
I'll be right with you...