quivering

(noun) a shaky motion. Synonyms: shaking, shakiness, trembling, quiver, vibration, palpitation. Example: "The shaking of his fingers as he lit his pipe."

(noun) the act of vibrating. Synonyms: vibration, quiver.

(verb) shake with fast, tremulous movements. Synonyms: quiver, quake, palpitate. Example: "His nostrils palpitated."

(verb) move back and forth very rapidly. Synonyms: flicker, waver, flitter, flutter, quiver. Example: "The candle flickered."

(verb) move with or as if with a regular alternating motion. Synonyms: pulsate, beat, quiver. Example: "The city pulsated with music and excitement."