Definition of nitpicking in English English dictionary
By extension, any process of finding or pointing out tiny details or errors, particularly if the pointed-out details seem insignificant or irrelevant to all but the finder
Of all life's pleasures, I like nitpicking the best. -- Wally in Dilbert.
disapproval If you refer to someone's opinion as nitpicking, you disapprove of the fact that it concentrates on small and unimportant details, especially to try and find fault with something. A lot of nit-picking was going on about irrelevant things I can get down to nitpicking detail, I am pretty fussy about certain things. = quibbling
quibbling over insignificant details; "caviling pettifoggers and quiggling pleaders"-Edmund Burke; "her nagging and carping attack"; "thought her editor unnecessarily nitpicking"; "a pettifogging lawyer's mind"; "had no patience with quibbling critics"