QUICK ANSWER
"Cualquier" is an adjective which is often translated as "any", and "cualquiera" is a pronoun which is also often translated as "any". Learn more about the difference between "cualquier" and "cualquiera" below.
cualquier(
kwahl
-
kyehr
)cualquiera(
kwahl
-
kyeh
-
rah
)A pronoun is a word that stands in for a noun (e.g., she).
1. (indefinite)
b. either (referring to two things)
¿Te traigo la pluma o el lápiz? - Cualquiera.Should I bring you the pen or the pencil? - Either.
c. whichever (referring to a choice)
Es un carro. Cualquiera que escojas va a ser costoso.It's a car. Whichever you choose is going to be expensive.
f. whoever
Cualquiera que quiera usar el baño, que vaya ahora.Whoever wants to use the bathroom, do it now.
g. whomever
Dile a cualquiera que invites que aquí no se permite fumar.Tell whomever you invite that smoking isn't allowed here.
An adjective is a word that describes a noun (e.g., the big dog).
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. tramp (colloquial)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
Si veo a esa cualquiera que me robó el novio, le daré un golpe.If I see that tramp who stole my boyfriend, I'm going to hit her.
This means that the noun can be masculine or feminine, depending on the gender of the noun it refers to (e.g., el doctor, la doctora).
