(formal, semi-formal, or offensive in Portugal, informal or formal in Brazil) second-person singular personal pronoun; you

where are you?

you are what you eat

(formal) Do you speak Portuguese?

you-know-who (known and unmentioned person)

said to a person who did something extraordinary or unexpected / said to a person who appears just when they are mentioned in a talk / Used other than figuratively or idiomatically: see você, não, existe.

(Brazil) where are you going

States that the interlocutor is misled by their opinion

you know better; it's your decision

do you come here often; a phrase strongly associated with flirtatious behavior