Answer: nattiest

AnswerCrossword Clue
NATTIESTMost spruce
NATTIESTBest-dressed, perhaps
NATTIESTMost tidy.
NATTIESTMost smart.
NATTIESTMost dapper
NATTIESTLeast slovenly, as attire
nattiestNATTY, neatly dressed
nattiesttrimly neat and tidy smart natty clothes a natty dresser