in a way that involves moving slightly from side to side, as if you might fall

He walked slowly and unsteadily to his piano. 他缓慢而蹒跚地走向他的钢琴。

Unsteadily, he made his way out of the door, and on to the street. 他摇摇晃晃地出门走到街上。

in a way that is not smooth or regular

His voice wavered unsteadily. 他的声音不稳定地颤抖着。

in a way that often changes or is likely to change

For much of the day, the market moved unsteadily, rising initially but then dipping lower before recovering in the afternoon.