Princeton's WordNet

1. crabbed, crabby, cross, fussy, grouchy, grumpy, bad-tempered, ill-tempered(adj)

   annoyed and irritable

2. busy, fussy(adj)

   overcrowded or cluttered with detail

   "a busy painting"; "a fussy design"

3. finical, finicky, fussy, particular, picky(adj)

   exacting especially about details

   "a finicky eater"; "fussy about clothes"; "very particular about how her food was prepared"

Kernerman English Learner's Dictionary

1. fussy(adjective)ˈfʌs i

   liking everything to be exactly the way you want

   He's fussy about his clothes.

Wiktionary

1. fussy(Adjective)

   Anxious or particular about petty details.

2. fussy(Adjective)

   Having a tendency to fuss, cry, or be ill-tempered (especially of babies).

Webster Dictionary

1. Fussy(u)

   making a fuss; disposed to make an unnecessary ado about trifles; overnice; fidgety

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