inflection of ir:
/ inflection of ir:

go figure

(Brazil, colloquial, only in the beginning of sentences) possibly; perhaps; maybe

how are you? (a greeting)

Used other than figuratively or idiomatically: see vai, saber. / who knows (a rhetorical question asked to show that the asker neither knows the answer nor who might know it) / who knows (asked to express the idea that anything is possible)

what if (introduces a wild speculation)

(Brazil, proscribed) Alternative form of vai-te foder

Godspeed / take care of yourself

(idiomatic) and so on; and so forth (indicates that a list continues)

there goes (used to comment on the permanent loss of something)