Greatness, (large) size. Also: wickedness (cf. enormity, n. 2). As a count noun: a thing of importance.

An important matter, an affair of consequence. Also: an important thing.

In more emphatic use: A thing, fact, person, etc., of some value, consideration, or regard.

An important person or thing. Now rare.

colloquial. With the. The special, important, or notable point; esp. that which is specially required; (more generally) that which is to be…

With the and singular agreement. That which is great (in various senses); great things, aspects, qualities, etc., collectively.

With the. That which is important; the important part of something; important things collectively.

(a) a large, important, or influential person; frequently as a form of address; (b) (as a mass noun) something large or important; (originally, Mil…

Something of importance or significance; a big deal. Usually in negative contexts, as no big whoop.