< Portuguese Grammar

indefinite pronouns: qualquer, bastante, tanto

These indefinite pronouns are also very common.

qualquer = whicever one, whatever
bastante = plenty
tanto(a) = so much, many

qualquer > Pode usar qualquer um. (You can use whichever one.)

bastante > Me divirto bastante. (I have plenty of fun.)

tanto > Ele te ama tanto. (She loves you so much.)

tanta > Temos tanta coisa. (We have so much.)