nit-picking[adjective]Synonyms: fussy, captious, carping, finicky, hairsplitting, pedantic, pettifogging, quibbling
[TahlilGaran] English Synonym Dictionary ▲
ˈnit-ˌpicking noun [uncountable] informal when someone argues about small unimportant details or tries to find small mistakes in something:
Soames was getting impatient with his daughter’s constant nitpicking.—nitpicking adjective—nitpicker noun [countable] [TahlilGaran] Dictionary of Contemporary English ▲