adjective
or wil·ful ˈwilfəl
Etymology: Middle English wilful, from (assumed) Old English wilful willing (whence Old English wilfullīce willfully), from Old English wil will + -ful
1. : governed by will without yielding to reason or without regard to reason : obstinately or perversely self-willed
devil took possession … I became obstinate and willful — L.N.Chambers
seemed willful as children, believing that the wish justified the act — C.B.Nordhoff & J.N.Hall
the moral passions are even more willful and imperious and impatient than the self-seeking passions — Lionel Trilling
: stubborn
possibly a few willful people might deny that Vermont is the most beautiful state — Bernard DeVoto
2. : done deliberately : not accidental or without purpose : intentional , self-determined
a willful injury
willful murder
willful distortion of the facts
alleged willful failure to register — Current Biography
3. obsolete : ready or disposed to comply : willing
4. obsolete : done of one's own free will : not compulsory
Synonyms: see unruly , voluntary