knight-errantry
noun
knight-er·rant·ry ˈnīt-ˈer-ən-trē 
plural knight-errantries
1
: the practice or actions of a knight-errant
2
: quixotic conduct
Word History
First Known Use
1620, in the meaning defined at sense 1
- nonliterate
- nonliterates
- nonliturgical
- nonlives
- nonliving
- nonlivings
- nonlocal
- nonlocalized vector
- nonlocally
- nonlocals
- nonlogical
- nonluminescent
- nonluminous
- nonlustrous
- nonmagnetic
- nonmailable
- nonmainstream
- nonmajor
- nonmajors
- nonmalignant
- nonmalleable
- nonmammalian
- nonman
- nonmanagement
- nonmanagements