—n.
1 hist. (Cavalier) a supporter of Charles I in the Civil War.
2 a courtly gentleman, esp. as a lady's escort.
3 archaic a horseman.
—adj. offhand, supercilious, blaseacute.
Derivatives:
cavalierly adv.
Etymology: F f. It. cavaliere: see CHEVALIER
Useful english dictionary. 2012.