a horseman, esp. a mounted soldier; knight.

one having the spirit or bearing of a knight; a courtly gentleman; gallant.

a man escorting a woman or acting as her partner in dancing.

( initial capital letter ) an adherent of Charles I of England in his contest with Parliament.

haughty, disdainful, or supercilious

an arrogant and cavalier attitude toward others.

offhand or unceremonious

The very dignified officials were confused by his cavalier manner.

( initial capital letter ) of or pertaining to the Cavaliers.

( initial capital letter ) of, pertaining to, or characteristic of the Cavalier poets or their work.

to play the cavalier.

to be haughty or domineering.