What does upon one's guard mean?

Definitions for upon one's guard

Here are all the possible meanings and translations of the word upon one's guard.

We couldn't find a direct definition for the term upon one's guard.

Maybe you were looking for one of these terms?

upon one's guard

... or search for upon one's guard inside other dictionary definitions.

Search inside

Are we missing a good definition for upon one's guard? Don't keep it to yourself...

Thanks for your vote! We truly appreciate your support.