what's what

(spoken)

the information about a person or situation You finally met her boyfriend, so now you know what's what. He's been in this business for a long time and really understands what's what. It will be hard for investors to tell what's what in the current stock-market crisis.

what's what

Informal

The fundamentals and details of a situation or process; the true state or condition.

Common Names:

Name	Pronounced	Usage
Shani (1)	-	Hebrew
Aemiliana	-	Ancient Roman
Mervin	MUR-vin (English)	Welsh, English
Molina	[mə'li:nə]
Aubury	['ɔ:bri]
GobÁN	-	Irish