keep a sharp lookout (for something or someone)

keep a sharp lookout (for something or someone)

To remain vigilant or carefully watchful (for something or someone). They should be arriving any minute, so keep a sharp lookout. Keep a sharp lookout for a Christmas present we could give your mother. Keep a sharp lookout for the health inspector, we heard he'll be doing a surprise inspection someday soon.
See also: keep, lookout, sharp, something
Farlex Dictionary of Idioms.
See also:
  • keep (one's) eye(s) out (for something or someone)
  • keep eye out
  • keep (one's) eye out for (someone or something)
  • keep an eye out for
  • keep an eye out for (someone or something)
  • keep (one's) eye(s) peeled (for something or someone)
  • keep (one's) eye(s) skinned (for someone or something)
  • keep eyes peeled
  • keep eyes
  • keep eyes open