Nitpick (verb)

To be overly critical or find petty faults or mistakes in something or someone.

Origin:

The word nitpick is derived from the word "nit" meaning "small particle" and "pick" meaning "to choose" or "to select".

Examples:

1. He spent the entire meeting nitpicking every tiny detail of the proposal.
2. She nitpicks everything I do, I can never please her.
3. The editor was known to nitpick even the smallest typo.
4. He nitpicked the dress code and said that my shoes were not appropriate.
5. The teacher nitpicked the student's grammar in the essay.