The definition of a fussbudget is an overly fussy or picky person.
(noun)A person who has to have everything done in a specific way and who is overly picky is an example of a fussbudget.
See fussbudget in Webster's New World College Dictionary
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noun
Origin: fuss + budget, prob. in sense “bag, sack”
See fussbudget in American Heritage Dictionary 4
also fuss-bud·get
noun