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.

Is on your guard a common word?

on your guard is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.