mod. having to do with someone or something that is very good; cool. : This music is mean, man, mean. What a great sound!
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Idioms & Phrases
by no means
Also, not by any means. In no way, certainly not. For example, He is by no means a weak opponent, or Not by any means will I go along with that decision. [Late 1400s]