DICT.TW Dictionary Taiwan

 self-will /-ˈwɪl/
 任性,固執

 Self-will n.  One's own will, esp. when opposed to that of others; obstinacy.
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 self-will
      n 1: resolute adherence to your own ideas or desires [syn: stubbornness,
            bullheadedness, obstinacy, obstinance, pigheadedness]
      2: the trait of resolutely controlling your own behavior [syn:
         self-control, self-possession, possession, willpower,
          self-command]