Plural of acumen; the ability to understand things quickly and make good decisions, especially in a particular area like business or strategy.
From Latin 'acumen,' derived from 'acuere' (to sharpen). The word literally means 'a sharpness' of mind—just as you sharpen a blade to make it keen, you sharpen your wits to make them keen. The suffix '-men' in Latin indicates the result or product of an action, so 'acumen' means 'the result of sharpening,' i.e., keen judgment.
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