abiding accordant ageless alike articulated automatic balanced catenated ceaseless chronological coeternal concatenated connected consecutive consistent consonant constant continual continued continuing correspondent cyclical dateless direct durational durative endless equable equal eternal eterne even ever-being ever-durable ever-during ever-recurring everlasting everliving featureless flat frequent gapless haunting homogeneous immediate immemorial immutable incessant indefatigable indestructible infinite interminable invariable joined jointless lasting level linked measured mechanical methodic monolithic monotonous never-ceasing never-ending nonstop nonterminating nonterminous of a piece olamic ordered orderly perdurable perennial periodic permanent perpetual persistent reappearing recurrent recurring regular remaining repetitive returning revenant robotlike round-the-clock running seamless sempiternal sequent sequential serial serried smooth stable staying steadfast steady sticking straight sustained systematic temporal thematic thick-coming tight timeless twenty-four-hour ubiquitous unbroken unceasing unchangeable unchanged unchanging undeviating undifferentiated undiversified undying unending uniform unintermitted unintermittent unintermitting uninterrupted unrelieved unremitting unruffled unstopped unvaried unvarying without end