Answer: fussbudget

AnswerCrossword Clue
FUSSBUDGETFaultfinding type
FUSSBUDGETNitpicker
FUSSBUDGETOverly particular one
FUSSBUDGETPernickity one
fussbudgeta fussy or needlessly fault-finding person.
fussbudget(US) one who is fussy about unimportant things