remain on guard

remain on guard

To continue to be especially careful, vigilant, or attentive; to stay prepared for danger or surprises. A possessive pronoun can be used between "on" and "guard." We'll have to remain on our guard while we're in this part of the city. I want you to remain on guard while I go inside and scope the place out.
See also: guard, on, remain
Farlex Dictionary of Idioms.
See also:
  • make (one's) money stretch
  • stretch money
  • at one's leisure
  • (Is) this taken?
  • not do (someone or oneself) any favors
  • third person
  • interpret for
  • interpret for (someone)
  • buy (yourself) time
  • buy time