jittery
US
UK jittery adj: (person: nervous, tense) (人)
SC 紧张不安的，心神不宁的 jǐn zhāng bù ān de，xīn shén bù níng de
The students were very jittery before their exam.
jittery adj: (action: showing nervousness) (行为)
SC 紧张不安的，焦躁的 jǐn zhāng bù ān de，jiāo zào de
Dave's hand was jittery as he signed the very important contract.