hatty adjective5 •Of, relating to, or resembling, a hat.Expect a hat which fits the size of your head – it's a very hatty date . — 1996 •Having the features one expects of a hat.He saw a hat, and a most hatty hat, a piece of green felt, shaped with leather and cloth, combining in itself all the quintessentials of hatness contained in all the hats ever made. — 1942 •(informal) A hat trick.The England international has been responding to critics on Instagram, commenting under one post regarding the situation: "What do you want me to do, score a hatty in 20?" — 2025 •Characterized by the wearing of hats.London remains the hattiest city in the world, and yet in this year of celebrations it has let Paris glorify the birth of the beaver. — 1897 •Fond of hats.We must confess that we never yet heard of such a very hatty Lord Mayor , though we have frequently heard of a Hatti-Sheriff. — 1851 formshatties · hattier · hattiest