acumen

acumen sounds like IQ-men.. men with high IQ have ability to judge quickly (has keen insight).

ACUTE+MIND...acute means sharp

acumen sounds like "IQ-man" or "a quick man" which grasps quickly

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acu+men its sounding like active men. Active men have an ability to think and judge quickly

acute of men-->ability to understand and judge any men quickly Ex:Business ACUMEN

Acumen could be seen as ACCURATE - MEN

think acute man, acute meaning ability to think with focus

A-CUrious-MEN : curious men are always keen about everything going around