(as) smart as a whip

(as) smart as a whip

Very intelligent, clever, or quick-thinking. Ted's as smart as a whip, so he'll find a solution to this problem. Of course Ellen is our valedictorian—she's as smart as a whip.
See also: smart, whip

smart as a whip

Very intelligent or clever, as in Little Brian is smart as a whip; he's only three and already learning to read. This simile alludes to the sharp crack of a whip. [Mid-1900s] Also see mind like a steel trap.
See also: smart, whip