1. Easily upset; given to bouts of ill temper: a fussy baby.

2. Paying great or excessive attention to personal tastes and appearance; fastidious: He was always fussy about clothes.

3. Calling for or requiring great attention to sometimes trivial details: a fussy actuarial problem.

4. Full of superfluous details: "It can indeed be fussy, filling with ornament what should be empty space" (H.D.F. Kitto).