articulated catenated ceaseless chattering concatenated connected constant continual continued continuing continuous cyclical direct endless featureless gapless immediate incessant interminable joined jointless linked machine gun monotonous never-ending nonstop oscillating perennial periodic perpetual pulsating rapid recurrent regular repeated repetitive round-the-clock running seamless serried smooth stable staccato steady straight stuttering sustained twenty-four-hour unbroken unceasing unchanging undifferentiated unending uniform unintermitted unintermitting uninterrupted unrelieved unremitting unstopped unvarying vibrating