adjective
1.
Synonyms: obstinate , headstrong, intractable, mulish, pertinacious, perverse, pigheaded, self-willed, stiff-necked, wrongheaded
Related Word: contumacious, factious
Idioms: having the bit in one's teeth, not yielding an inch
Contrasted words: amenable, docile, obedient, tractable
Antonyms: biddable
2.
Synonyms: voluntary , deliberate, intentional, unforced, unprescribed, willing, witting
Related Word: intentional, purposive; decided, determined, resolved; dogged, obstinate, pertinacious, stubborn
Contrasted words: accidental, chance, involuntary, unintentional, unplanned