Definition of "nitpicking" []

• Minute, trivial, unnecessary, and unjustified criticism or faultfinding. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I can't remember how old I was when I figured out that the term nitpicking must have come from picking lice nits."
• "And that little bit of nitpicking is really annoying me."
• "Whenever I hear someone say they hate Shyamalan's movies, I get really bizarre responses that usually end up in nitpicking, not really any reason to genuinely hate something."