temperament
/ˈtemprəmənt; `tɛmprəmənt/ n[C, U]
person's nature as it affects the way he thinks, feels and behaves 气质; 性情; 禀性
I've got a very nervous temperament. 我很神经质.
a man with an artistic temperament 有艺术家气质的男子
The two brothers have entirely different temperaments. 他们兄弟俩的性情完全不同.
To be a champion, skill is not enough you have to have the right temperament. 要当冠军, 光有技巧还不够--还必须有相应的禀赋.
Opera singers often display a lot of temperament, ie are moody or excitable. 歌剧演员的性情常常不稳定（情绪多变或爱激动）.