razor-sharp

adjective3

1. •
   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.
2. •
   (figurative) Very clever or quick-witted.
3. •
   (figurative) Very stylish or attractive.

   • One day, she was in a razor-sharp three-piece suit, and the next, a tulle skirt that had no business being worn after the age of five (but she did, and then we all wanted to wear tutus too!). — 2026