razor-sharp

• razor sharp

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razor-sharp

1. As sharp as a razor; extremely sharp.

   The executioner was proud that he kept his axe razor-sharp, so no prisoner would feel any pain when his head was cut off.

   • 2002 March 20, Kazuki Takahashi, Yu-Gi-Oh! Forbidden Memories (PlayStation video game, North American version), Konami:

     [flavor text of the card "Zera The Mant"]
     A huge, brutal monster that attacks with razor-sharp claws.

2. (idiomatic) Very clever or quick-witted.