temperamental
adj
1 caused by a person's temperament 由人的氣質引起的; 生來的
a temperamental aversion to hard work 生性厭惡艱苦的工作.
2 (often derog 常作貶義) having or showing fits of excitable or moody behaviour; not calm or consistent 神經質的; 不冷靜的; 變化無常的
He's avery temperamental player, ie plays well or badly accordingto his mood. 他是個情緒波動的演員(演得好壞由心情而定).
(joc 謔) My car is a bit temperamental, ie is likely to break down, fail to start, etc. 我的汽車沒準脾氣(可能出毛病、 發動不起來等).