knight-errantry
noun1
The character or actions of wandering knights; the practice of wandering in quest of adventures.
2
Chivalry; a quixotic or romantic adventure or scheme.
- Virtue is knight-errantry no more1742–1745, [Edward Young], The Complaint: Or, Night-Thoughts on Life, Death, & Immortality, London: […] [Samuel Richardson] for A[ndrew] Millar […], and R[obert] Dodsley […], published 1750, →OCLC: