1. 性急的：quick-sighted 眼快的 | quick-tempered 性急的 | quick-witted 富有机智的
2. 性急的/易怒的：quick-sighted /眼快的/眼力锐利的/慧眼的/ | quick-tempered /性急的/易怒的/ | quick-witted /富有机智的/机敏的/
3. 急性子的：light-minded 轻浮的 | pigeon-livered 温顺的 | quick-tempered 急性子的
1. 性情急躁的;急性子的;易怒的
Someone who is quick-tempered often gets angry without having a good reason.
adj
1. quickly aroused to anger
e.g. a hotheaded commander
Synonym: choleric irascible hotheaded hot-tempered short-tempered