jumpy
adjective informal uk/ˈdʒʌm.pi/ us/ˈdʒʌm.pi/
提心吊胆的;胆战心惊的;紧张不安的
nervous and worried, especially because you are frightened or guilty
My mother gets very jumpy when she's alone in the house. 我母亲一个人在家时，总是很害怕。
Synonyms: high-strung highly strung jittery uptight