early 15c., altered from or re-formed to replace Middle English unwilland, from Old English unwillende; see un- (1) "not" + willing (adj.). Also see -ing (2). Related: Unwillingly; unwillingness.
unwilling to face facts
an unwilling assistant
an unwilling smile
unwed
unwelcome
unwell
unwholesome
unwieldy
unwilling
unwind
unwise
unwisely
unwitting
unwonted