movement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"

arrhythmia, cardiac arrhythmia - an abnormal rate of muscle contractions in the heart

disorder - a disturbance of the peace or of public order

turmoil, upheaval, convulsion - a violent disturbance; "the convulsions of the stock market"

earthquake - a disturbance that is extremely disruptive; "selling the company caused an earthquake among the employees"

incident - a public disturbance; "the police investigated an incident at the bus station"

tempest, storm - a violent commotion or disturbance; "the storms that had characterized their relationship had died away"; "it was only a tempest in a teapot"

storm center, storm centre - a center of trouble or disturbance

garboil, tumult, tumultuousness, uproar - a state of commotion and noise and confusion

undulation, wave - (physics) a movement up and down or back and forth

butterfly - flutter like a butterfly

hurry, travel rapidly, zip, speed - move very fast; "The runner zipped past us at breakneck speed"

move back and forth - move in one direction and then into the opposite direction

thump, beat, pound - move rhythmically; "Her heart was beating fast"

palpitate - cause to throb or beat rapidly; "Her violent feelings palpitated the young woman's heart"

blink, nictate, nictitate, wink - briefly shut the eyes; "The TV announcer never seems to blink"