The Collaborative International Dictionary of English v.0.48:
fusspot \fusspot\ n. same as fussbudget. Syn: worrier, fussbudget, worrywart. [WordNet 1.5]WordNet (r) 3.0 (2006):
fusspot n 1: thinks about unfortunate things that might happen [syn: worrier, fuss-budget, fusspot, worrywart]