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)

(idiomatic) retort to questioning about a person by a stranger, when one does not want to confirm or deny knowing or being the person.

To understand one's rank or status and behave accordingly; to act humbly.

Synonym of know B from a battledore (“to know anything at all; to have the most basic common sense or intelligence”)

Alternative form of not know which way to turn

(set phrase) To understand completely.