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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for knight errantry

knight errantry

noun

the practices of a knight errant
quixotic behaviour or practices

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012