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. (He loves you so much.)
tanta ➜ Temos tanta coisa. (We have so much.)