Whip-smart

//ˈʍɪpˌsmɑːt// adj, slang

Definitions

Adjective
  1. 1
    Very intelligent. Canada, US, informal

    "Seeing them here in town, smart in American-style uniforms, Peru's Army looks extremely well-trained, whip-smart."

Etymology

Inversion of earlier smart as a whip (compare rock solid, from solid as a rock; snow-white, from white as snow; etc.). Possibly an allusion to how quickly the tip of a whip moves when the whip is cracked.

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