'Willful' definitions:

Definition of 'willful'

(from WordNet)
adjective
Done by design; "the insult was intentional"; "willful disobedience" [syn: willful, wilful]
adjective
Habitually disposed to disobedience and opposition [syn: froward, headstrong, self-willed, willful, wilful]

Definition of 'Willful'

From: GCIDE
  • Willful \Will"ful\, a. [Will + full.] [Written also wilful.] [1913 Webster]
  • 1. Of set purpose; self-determined; voluntary; as, willful murder. --Foxe. [1913 Webster]
  • In willful poverty chose to lead his life. --Chaucer. [1913 Webster]
  • Thou to me Art all things under heaven, all places thou, Who, for my willful crime, art banished hence. --Milton. [1913 Webster]
  • 2. Governed by the will without yielding to reason; obstinate; perverse; inflexible; stubborn; refractory; as, a willful man or horse. [1913 Webster] -- {Will"ful*ly}, adv. -- {Will"ful*ness}, n. [1913 Webster]

Synonyms of 'willful'

From: Moby Thesaurus