nat ‧ ty /ˈnæti/ BrE AmE adjective informal
[ Date: 1700-1800 ; Origin: Probably from netty 'neat' (1500-1600) , from net 'neat, clean' (14-19 centuries) , from French ; ⇨ ↑ neat ]
neat and fashionable in appearance:
a natty suit
He was a natty dresser.
—nattily adverb