B2 adjective /ˈʃɔːrt ˌtempərd/
Short-tempered
短気な; すぐに怒る
Meaning
quick to lose one's temper; easily angered
Example
She became short-tempered when the traffic made her late for the meeting.
交通のせいで遅れてしまったとき、彼女は短気になった。