pernickety(Informal)[adjective]Synonyms: fussy, exacting, fastidious, finicky, overprecise, particular, picky 
(informal)  [TahlilGaran] English Synonym Dictionary ▲
 per‧nick‧e‧ty /pəˈnɪkəti, pəˈnɪkɪti $ pər-/ 
 adjective British English informal[
Date: 1800-1900; 
Origin: Perhaps from particular]
 worrying too much about small and unimportant things
 Synonym : fussy  [TahlilGaran] Dictionary of Contemporary English ▲