be caught off (one's) guard

(redirected from is caught off guard)
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be caught off (one's) guard

To be taken by surprise; to be caught when one is vulnerable, careless, or inattentive. We'll wait until he's caught off guard, and then we'll take him and his company for all they're worth! Don't be caught off your guard. There are a lot of suspicious characters around here.
See also: caught, guard, off