Willful

Part of speech: adjective (a.)

1. Of set purpose; self-determined; voluntary; as, willful murder. Foxe. In willful poverty chose to lead his life. Chaucer. Thou to me Art all things under heaven, all places thou, Who, for my willful crime, art banished hence. Milton.

2. Governed by the will without yielding to reason; obstinate; perverse; inflexible; stubborn; refractory; as, a willful man or horse. -- Will"ful*ly, adv. -- Will"ful*ness, n.