A political or social ideology or attitude characteristic of cavaliers; the principles or practices of aristocratic or royalist supporters.
From 'cavalier' plus the suffix '-ism' (forming ideologies and belief systems). Historically rooted in the English Civil War era when Cavaliers opposed Parliamentarians, the term gained philosophical weight.
'Cavalierism' was taken seriously enough by 19th-century political writers to analyze as a genuine historical ideology—not just arrogance, but a whole worldview centered on loyalty, honor, and aristocratic privilege that shaped British politics.
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