on your guard

1. 1.

   vigilant

   “on guard against con artists”

   “must remain on your guard in such a situation”

   Synonymson guardon one's guardupon one's guard

   Similarwary

Questions about on your guard

What does on your guard mean?

on your guard means "vigilant".

What is another word for on your guard?

Close synonyms include on guard, on one's guard, upon one's guard. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.