cavalier

noun

1 (Cavalier) historical Cavaliers dying for King Charles:

Royalist, king's man.

▷antonyms Roundhead, parliamentarian.

2 archaic foot soldiers and cavaliers:

horseman, cavalryman, horse soldier, trooper, equestrian, knight, chevalier;

dragoon, hussar, lancer, carabineer, cuirassier, sabreur.

adjective

a cavalier disregard for the real dangers |

a cavalier attitude to other people's problems:

offhand, indifferent, casual, dismissive, insouciant, uninterested, unconcerned;

supercilious, patronizing, condescending, haughty, arrogant, lofty, lordly, disdainful, scornful, contemptuous, unceremonious, discourteous, uncivil, insolent, rude, glib, ungracious, perfunctory, cursory, curt, abrupt, terse, brusque;

informal off, offish, couldn't-care-less, take-it-or-leave-it;

rare pococurante.

▷antonyms thoughtful.