nitpickiest
/ˈnɪtˌpɪkiɪst/
adjective
- Most inclined to find or complain about small, unimportant faults; extremely critical of minor details.
- She is the nitpickiest person I know, always pointing out dust specks no one else sees.
- Of all the editors, he was the nitpickiest, demanding every semicolon be perfect.
- The nitpickiest customer complained that the font size was off by one pixel.