ageless, articulated, catenated, ceaseless, chattering, coeternal, concatenated, connected, constant, continued, continuing, continuous, cyclical, dateless, direct, endless, eternal, eterne, ever-being, ever-durable, ever-during, everlasting, everliving, featureless, gapless, immediate, immemorial, incessant, indestructible, infinite, interminable, joined, jointless, linked, machine gun, monotonous, never-ceasing, never-ending, nonstop, nonterminating, nonterminous, olamic, oscillating, perdurable, perennial, periodic, permanent, perpetual, persistent, pulsating, rapid, recurrent, regular, repeated, repetitive, round-the-clock, running, seamless, sempiternal, serried, smooth, stable, staccato, steady, straight, stuttering, sustained, timeless, twenty-four-hour, unbroken, unceasing, unchanging, undifferentiated, unending, uniform, unintermitted, unintermittent, unintermitting, uninterrupted, unrelieved, unremitting, unstopped, unvarying, vibrating, without end
perpetuity, eternity, everness, aye, sempiternity, immortality, athanasia, interminability, agelessness, everlastingness, perpetuation, continued existence, uninterrupted existence, perennity, permanence (durability), perpetual, eternal, everduring, everlasting, ever-living, ever- flowing, continual
, sempiternal, coeternal, endless, unending, ceaseless, incessant, uninterrupted, indesinent, unceasing, endless, unending, interminable, having no end, unfading, evergreen, amaranthine, neverending, never-dying, never-fading, deathless, immortal, undying, imperishable, perpetually, always, ever, evermore, aye, for ever, for aye, till the end of the universe, forevermore, forever and a day, for ever and ever, in all ages, from age to age, without end, world without end, time without end, in secula seculorum, to the end of time, to the crack of doom, to the 'last syllable of recorded time', till doomsday, constantly, esto perpetuum, labitur et labetur in omne volubilis oevum, but thou shall flourish in immortal youth, Eternity! thou pleasing, dreadful thought, her immortal part with angels lives, ohne Rast ora e sempre.
frequency, oftness, oftenness, commonness, repetition, normality, example (conformity), routine, custom (habit), regularity, uniformity, constancy, clock-work precision, punctuality, even tenor, system, routine, formula, rule, keynote, standard, model, precedent, conformity, frequent, many times, not rare, thickcoming, incessant, perpetual, continual
, steady, constant, thick, uniform, repeated, customary, (habit), regular (normal), according to rule, common, everyday, usual, ordinary, familiar, old-hat, boring, well-known, trivial, often, oft, ofttimes, oftentimes, frequently, repeatedly, unseldom, not unfrequently, in quick succession, in rapid succession, many a time and oft, daily, hourly, every day, every hour, every moment, perpetually, continually, constantly, incessantly, without ceasing, at all times, daily and hourly, night and day, day and night, day after day, morning noon and night, ever anon, invariably (habit), most often, commonly, sometimes, occasionally, at times, now and then, from time to time, there being times when, toties quoties, often enough, when the mood strikes, again and again.