The definition of fussy is a person demanding attention, complaining a lot or worrying about nothing.
Cross and complaining; peevish; ill-tempered
Easily offended; oversensitive; irritable
Irritable; touchy; peevish
Threatening, as of weather conditions; ominous:
Rough and outspoken; not patient, kindly, or refined
Tending toward or characterized by cruelty or violence:
Mean; malicious; ill-humored
(Informal) Ill-tempered; cross
Find another word for grouchiest. In this page you can discover 13 synonyms, antonyms, idiomatic expressions, and related words for grouchiest, like: grumpiest, fussiest, crabbiest, touchiest, testiest, surliest, crustiest, crankiest, meanest, snappiest and nastiest.