NONCHALANT
ADJECTIVES
► AIRY of a person or a person’s character, etc.: superficial, shallow; later: nonchalalnt, offhand; dismissive → 1609
► GALLOWS ► GALLUS attractive, wonderful; self-confident, quick-witted, brave, tough, bold, daring, ostentatious, nonchalant → 1789 UK
► POCOCURANTE caring little, careless, indifferent, nonchalant → 1815
► TOOTH-PICKING careless, nonchalant → 1814
VERBS
► WALTZ to move in a nonchalant manner → 1887 US sl.
Lexicophilia 