<p><strong>Noun</strong></p><ul><li>a horseman, especially a mounted soldier; knight.</li><li>one having the spirit or bearing of a knight; a courtly gentleman; gallant.</li><li>a man escorting a woman or acting as her partner in dancing.</li><li>(initial capital letter) an adherent of Charles I of England in his contest with Parliament.</li></ul><p><strong>Adjective</strong></p><ul><li>haughty, disdainful, or supercilious: an arrogant and cavalier attitude toward others.</li><li>of or relating to the Cavaliers.</li><li>of, relating to, or characteristic of the Cavalier poets or their work.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to play the cavalier.</li><li>to be haughty or domineering.</li></ul>