ageless, articulated, catenated, ceaseless, chattering, coeternal, concatenated, connected, constant, continual, continued, continuing, continuous, cyclical, dateless, direct, endless, eternal, eterne, ever-being, ever-durable, ever-during, ever-recurring, everlasting, everliving, featureless, frequent, gapless, haunting, immediate, immemorial, indestructible, infinite, interminable, joined, jointless, linked, machine gun, monotonous, never-ceasing, never-ending, nonstop, nonterminating, nonterminous, olamic, oscillating, perdurable, perennial, periodic, permanent, perpetual, pulsating, rapid, reappearing, recurrent, recurring, regular, repeated, repetitive, returning, revenant, round-the-clock, running, seamless, sempiternal, serried, smooth, stable, staccato, steady, straight, stuttering, sustained, thematic, thick-coming, timeless, twenty-four-hour, ubiquitous, unbroken, unceasing, unchanging, undifferentiated, unending, uniform, unintermitted, unintermittent, unintermitting, uninterrupted, unrelieved, unremitting, unstopped, unvarying, vibrating, without end