unwilling or unable to stay still or to be quiet and calm, because you are worried or bored

He's a restless type - he never stays in one country for long. 他是那种呆不住的人——他从来不在一个国家呆太长的时间。

She spent a restless night (= she did not sleep well), tossing and turning. 她在床上辗转反侧，一夜无眠。

Synonym: restive