willful

adj. strong-willed, stubborn, hard headed; intentional, determined

For Tao Group's software platform, see intent (software).Intent in law is the planning and desire to perform an , to fail to act (i.e. an omission) or to achieve a state of affairs.In criminal law, for a given actus reus ("guilty act"), the requirement to prove intent consists of showing mens rea (mental state, "guilty mind").
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Adjective
1. done by design; "the insult was intentional"; "willful disobedience"
(synonym) intentional, wilful
(similar) voluntary
2. habitually disposed to disobedience and opposition
(synonym) froward, headstrong, self-willed, wilful
(similar) disobedient
3. by conscious design or purpose; "intentional damage"; "a knowing attempt to defraud"; "a willful waste of time"
(synonym) deliberate, intentional, knowing, wilful
(similar) intended

(a.)
Of set purpose; self-determined; voluntary; as, willful murder.
  

(a.)
Governed by the will without yielding to reason; obstinate; perverse; inflexible; stubborn; refractory; as, a willful man or horse.
  

Synonyms and related words:
advised, aimed, aimed at, arbitrary, autonomous, balking, balky, bigoted, bulldogged, bulletheaded, bullheaded, calculated, case-hardened, conscious, considered, contemplated, contumacious, decided, deliberate, deliberated, designed, determined, discretional, discretionary, disobedient, dogged, dogmatic, elective, envisaged, envisioned, factious, fanatic, free, free will, froward, gratuitous, hardheaded, headstrong, heady, independent, indisciplined, insubordinate, intended, intentional, intolerant, intractable, irresponsible, knowing, lawless, licentious, meant, meditated, mulish, mutinous, naughty, nonconforming, nonmandatory, obstinate, of design, offered, opinionated, optional, overzealous, persevering, pertinacious, perverse, pigheaded, planned, proffered, projected, proposed, purposed, purposeful, purposive, rampant, recusant, reinless, resolved, restive, self-acting, self-active, self-determined, self-determining, self-willed, set, spontaneous, stiff-necked, strong-willed, strongheaded, stubborn, studied, sulky, sullen, teleological, tenacious, transgressive, unaccountable, unasked, unbesought, unbidden, unbridled, uncalled-for, unchecked, uncoerced, uncompelled, uncomplying, uncontrolled, uncooperative, uncurbed, undisciplined, unduteous, undutiful, unforced, ungoverned, uninfluenced, uninvited, unpressured, unprompted, unregenerate, unreined, unrequested, unrequired, unrestrained, unsolicited, unsought, violative, voluntary, volunteer, wayward, wildcat, willing, witting, wrongheaded