vibrating

(verb) shake, quiver, or throb; move back and forth rapidly, usually in an uncontrolled manner. Synonyms: vibrate.

(verb) move or swing from side to side regularly. Synonyms: oscillate, vibrate. Example: "The needle on the meter was oscillating."

(verb) be undecided about something; waver between conflicting positions or courses of action. Synonyms: hover, vibrate, vacillate, oscillate. Example: "He oscillates between accepting the new position and retirement."

(verb) sound with resonance. Synonyms: resonate, vibrate. Example: "The sound resonates well in this theater."

(verb) feel sudden intense sensation or emotion. Synonyms: thrill, tickle, vibrate. Example: "He was thrilled by the speed and the roar of the engine."