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Someone who is overly inclined to point out or complain about every flaw they come across (in or about something), no matter how small, petty, or insignificant. Sometimes hyphenated or spelled as two separate words. You might write me off as just a nitpicker, but you'll appreciate it when you get an A+ on this paper. This is why I hate going to the movies with nit-pickers like you. Instead of just enjoying what we watch, you have to criticize every little flaw you can think of!
Someone who uses their finger to remove mucus from the nose. I am bound and determined to make sure my kids don't become nose-pickers!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a person who is hypercritical. Mary is such a nit-picker!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
Someone who bothers with tiny, trivial, unimportant details, in effect looking for mistakes. “Nit” alludes to the tiny eggs of the louse. The term dates from the mid-1900s.
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer