Synonym of God knows

Possibly or conceivably, given one's limited knowledge.

(idiomatic, vulgar) Synonym of I don't know

(idiomatic, vulgar) To be well-informed concerning a particular subject; to have a capable command of a particular area of expertise.

It is necessary to be informed in order to do the right thing in a given situation.

A person who is in great need of something will find a way to obtain it, and violate the law if needed.

(dated) Synonym of know what is what

(dated) Synonym of know what is what

(vulgar, idiomatic) I have no idea whatsoever

rapidly (and sometimes unexpectedly)