volitional (a.)意志的,憑意志的
vo·li·tion·al /-ˈlɪʃnəl, ənḷ/ 形容詞
Vo·li·tion·al a. Belonging or relating to volition. “The volitional impulse.” ◄ ►
volitional adj : with deliberate intention; "a volitional act"