waver

1. V-I If you waver, you cannot decide about something or you consider changing your mind about something. 犹豫不决; 踌躇

Some military commanders wavered over whether to support the coup. 一些军队指挥官对是否支持政变犹豫不决。

2. V-I If something wavers, it shakes with very slight movements or changes. 摇摆

The shadows of the dancers wavered continually. 舞者的身影摇摆不停。