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Sharp as a tack

shape someone up
sharp as a tack
Also, sharp as a razor. Mentally acute. For example, She’s very witty—she’s sharp as a tack. These similes are also used literally to mean “having a keen cutting edge” and have largely replaced the earlier sharp as a needle or thorn. The first dates from about 1900, the variant from the mid-1800s.


Read Also:

  • Sharpbender

    noun 1. (informal) an organization that has been underperforming its competitors but suddenly becomes more successful, often as a result of new management or changes in its business strategy

  • Sharpbill

    noun 1. a passerine bird, Oxyruncus cristatus, of New World tropical forests, having greenish plumage and a pointed bill, related to the tyrant flycatchers.

  • Sharp-cut

    adjective 1. cut so as to have a sharp edge: a tool with a sharp-cut blade. 2. distinctly outlined; clearly defined.

  • Sharp-eared

    adjective 1. having pointed ears. 2. having keen hearing.

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