knight-errantry

[ nahyt-er-uh n-tree ]
/ ˈnaɪtˈɛr ən tri /

noun, plural knight-er·rant·ries.

the behavior, vocation, or character of a knight-errant.
quixotic conduct or action.

Origin of knight-errantry

First recorded in 1645–55; knight-errant + -ry

British Dictionary definitions for knight errantry

knight errantry

noun

the practices of a knight errant
quixotic behaviour or practices