Definition of undercover man
: one who undertakes to secure evidence of criminal or illegal actions by working with or among those who are under suspicion; also : one who secures a position (as in a business or factory) for the purpose of illicitly obtaining confidential information
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up undercover man? Please tell us where you read or heard it (including the quote, if possible).