Acumen

noun.

the ability to make good judgments and quick decisions, typically in a particular domain.

Synonyms: astuteness, shrewdness, acuity, sharpness, sharp-wittedness, cleverness, smartness,

Origin: Latin

late 16th century: from Latin, ‘sharpness, point,’ from acuere ‘sharpen’

(Taken From Google Definitions)

~Daniel