keep a close eye on (someone or something)

keep a close eye on (someone or something)

To monitor someone or something closely. Keep a close eye on this pot so that the soup doesn't boil over.
See also: close, eye, keep, on
Farlex Dictionary of Idioms.

keep a close ˈeye/ˈwatch on somebody/something

watch somebody/something carefully: Over the next few months we will keep a close eye on sales.
See also: close, eye, keep, on, somebody, something, watch
Farlex Partner Idioms Dictionary
See also:
  • keep (a) close watch on (someone or something)
  • keep a close eye/watch on somebody/something
  • keep a close watch on
  • keep watch on
  • close at hand
  • come close
  • play one's cards close to one's chest, to
  • close out
  • close by
  • sail close to (near) the wind, to