(rare) Because of, due to.

Alternative form of know what is what

(idiomatic) To be experienced or well-informed. / (idiomatic) To be astute, perceptive enough to observe a situation that is not what it seems and recognize its true nature.

plural of what; used as a stand-in to collectively pluralize arbitrary instances of things. Often used along with whys, hows, etc.

plural of whatness

(philosophy) Essence; quiddity. / Quality; quantity.

What is the time of day? (used to request for the current hour and approximate number of minutes after the hour)

(idiomatic, colloquial) An intensified version of what? or huh?, expressing surprise or lack of comprehension

Used to make a suggestion. / Used to ask someone to consider something or someone that they have apparently not considered. / To repeat a question but referring to a different subject or object.

(idiomatic) what are the advantages of (something) to me, personally?