Vibrate is a term used to describe a rapid, repeated movement or SOUND. REVERBERATE (11 letters) is an example of a word that means to vibrate or ECHO in a series of waves. FLUTTER (7 letters) is another word that describes a rapid, wavering motion. QUAKE (5 letters) is a term used to describe a sudden shaking or trembling. FLUCTUATE (9 letters) is a term used to describe a change in the intensity or frequency of something. HUM (3 letters) is a low, continuous SOUND. FLICKER (7 letters) is a term used to describe a quick, intermittent light or flame. WAG (3 letters) is a term used to describe a swaying or oscillating motion. BEAT (4 letters) is a term used to describe a regular pulsation or vibration. ECHO (4 letters) is a term used to describe a SOUND that is repeated after it is produced. PULSE (5 letters) is a term used to describe a rhythmic throbbing or beating. SOUND (5 letters) is a term used to describe a vibration that travels through the air and can be heard when it reaches a person's ear. UNDULATE (8 letters) is a term used to describe a wave-like motion. SWING (5 letters) is a term used to describe a back-and-forth or side-to-side motion. TREMBLE (7 letters) is a term used to describe a quivering or shaking motion. JUDDER (6 letters) is a term used to describe a vibratory or jerky motion. OSCILLATE (9 letters) is a term used to describe a regular, back-and-forth motion. SHAKE (5 letters) is a term used to describe a quick, vibratory motion. RESONATE (8 letters) is a term used to describe a vibration that is caused by another vibration. WHIR (4 letters) is a term used to describe a continuous humming or buzzing SOUND. SHOOK (5 letters) is a term used to describe a trembling or shaking motion. THROB (5 letters) is a term used to describe a pulsating or vibrating sensation. TRILL (5 letters) is a term used to describe a rapid, quavering SOUND. All of these words are related to the term vibrate and can be used to describe a rapid, repeated movement or SOUND.