catch out verb Trending Now: More Trending: symbiote charlatan lowlife kakistocracy slimeball SEE ALL See What's Trending Now See More Trending Words What's Trending Now More Trending Words symbiote 'an organism living in symbiosis' charlatan 'faker or fraud' lowlife 'a person of low moral character' kakistocracy 'government by the worst people' slimeball 'a morally repulsive or odious person' SEE ALL Time Traveler! Explore the year a word first appeared Definition of catch out transitive verb 1 : to detect in error or wrongdoing caught him out committing perjury 2 : to take unawares or by surprise First Known Use of catch out 1804 in the meaning defined at sense 1 See Words from the same year NEW! Time Traveler Learn More about catch out See words that rhyme with catch out Seen and Heard What made you want to look up catch out? Please tell us where you read or heard it (including the quote, if possible). show hide