Know what's what

Slang Dictionary

know what's what definition

  1. tv.
    to be aware of what is going on in the world. : We don't know what's what around here yet.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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know what's what

be well-informed [syn: know the score
WordNet® 3.0, © 2006 by Princeton University.
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