nobody's fool
Someone who cannot easily be fooled, swindled, or taken advantage of. He tried to convince her to sign up for the expensive upgrade, but my mother is nobody's fool, and she could tell straight away that it was a scam. He may look a bit simple with his big round eyes and boyish features, but John is nobody's fool.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
nobody's fool
Fig. a sensible and wise person who is not easily deceived. Mary is nobody's fool. She watches out for people who might try to cheat her. Anne may seem as though she's not very bright, but she's nobody's fool.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
nobody's fool
A person who cannot be duped or taken advantage of, as in You can't put anything over on Ryan-he's nobody's fool. [Early 1900s]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.