fastidious about one's needs or requirements; hard to please

he is very fussy about what he eats

bream are not fussy eaters and generally eat what's available

full of unnecessary detail or decoration

she describes her own style as elegant chic, simple not fussy

I hate fussy clothes

(of a baby or infant) prone to crying or being upset; irritable

the rocker has a calming vibration setting that helps soothe fussy babies

fussy toddlers who won't stand still for one picture