keep nose clean
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
keep (one's) nose clean
To behave properly; to stay out of trouble. You better keep your nose clean, kid, or you're going to run into trouble you can't handle.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
keep one's nose clean
Fig. to keep out of trouble, especially trouble with the law. I'm trying to keep my nose clean by staying away from those rough guys. John, if you don't learn how to keep your nose clean, you're going to end up in jail.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
keep (one's) nose cleanInformal
To stay out of trouble.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.