definitions

catch napping

Surprise, take unawares. This term is often used in the passive, as in The United States was really caught napping the day the Japanese bombed Pearl Harbor. It originated in the mid-1500s as to be taken napping. Also see under off guard.

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Nearby words

catch crop, catch dog, catch fire, catch in the act, catch it, catch napping, catch off guard, catch on, catch one's breath, catch out, catch phrase
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.