vibrating
Definitions
Moving rapidly to and fro or oscillating with a small amplitude.
Characterized by a continuous, rhythmic shaking or trembling motion.
Examples
The phone was vibrating on the wooden table, making a loud buzzing sound.
I could feel the floor vibrating beneath my feet as the heavy train passed by.
The machine is vibrating excessively, which suggests that some of the internal parts are loose.
Synonyms
quivering trembling shaking oscillating pulsating throbbing shuddering