Answer: fuddyduddy

AnswerCrossword Clue
FUDDYDUDDYOld-fashioned fussbudget
FUDDYDUDDYSquare
FUDDYDUDDYStuffed shirt
FUDDYDUDDYStick-in-the-mud
FUDDYDUDDYPernickety one
FUDDYDUDDYMossback
FUDDYDUDDYA square, like Caspar Milquetoast
FUDDYDUDDYOverfastidious one