Synonym of year long

perennial enduring lasting eternal perpetual abiding everlasting constant permanent continuing persistent endless immortal unending undying ceaseless imperishable continual incessant timeless ageless uninterrupted ongoing unceasing dateless persisting durable unchanging deathless sustained perdurable chronic regular lifelong recurrent unfailing old inveterate longstanding returning annual seasonal yearly never-ending long-lasting long-lived never-changing year-round continuous fixed immutable steady indestructible interminable unfading sempiternal unremitting unabating long-standing unbroken continued relentless remaining recurring infinite stable steadfast deep-rooted firm forever unrelenting established nonstop surviving habitual non-stop long-term changeless unfaltering prolonged running without end ineradicable amaranthine unvarying fast indissoluble prevailing indefinite persevering protracted ingrained unrelieved tenacious routine invariable round-the-clock settled usual unwavering undeviating deep-seated long-established incurable inborn ever-present inbred stubborn obstinate unyielding rooted unmitigated inextinguishable boundless reliable immovable standing immemorial illimitable repeated always frequent consecutive lingering termless unflagging traditional never dying sustaining advancing pursuing maintaining progressing never-ceasing long-running time-honoured confirmed undiminished carrying on irreversible lengthy indelible unalterable secure unchangeable long living extended set long-drawn-out unabated unwaning untiring indefatigable classic dogged tireless staying repetitive time-honored unswerving drawn-out in for the long haul age-old always-on without respite around-the-clock oft-repeated round the clock strong unforgettable unspoiled youthful fresh never-dying unshakable undestroyed resilient unended agelong atemporal connected aeonian irreparable uniform repetitious repeating reoccurring intermittent current slow dragging consistent unwearied serious limitless lifetime anti-aging in progress cursive neverending going on perduring world-without-end livelong severe undivided lifetime's unchanged periodical periodic static for keeps existing acute dangerous death-defying ever living stationary resolute all-time for life extant spun-out haunting incorruptible phoenixlike undeadly day and night on a treadmill set in concrete set in stone marathon far great long-drawn for all your life regularized standardised regularised ancient closed alarming extreme dire grave forever and a day staunch standardized monotonous on an even keel that will never die that will live forever extensive interminate unwearying drawn out familiar in existence longevous stretched out time-hallowed customary conventional solid well established ritual dependable old as Methuselah full of years ritualistic still existing inexhaustible inexpungible till the cows come home wonted historic folk ancestral old-world old-time even unlimited unfluctuating immeasurable unbounded bottomless overlong day-and-night no end to no end of invariant measureless untold incalculable immensurable inestimable unfathomable horizonless fathomless smooth indeterminate nagging straight stabile same vast immense boring rhythmic undisturbed unsurpassable numberless self-perpetuating multitudinous countless dull direct successive diligent assiduous sustainable untroubled unvaried niggling without stopping unsleeping without interruption level predictable equable iterative gnawing homogenous metrical reiterative renewable absolute cosmic total without limit insistent steady-going verbose uninteresting flowing fluent remorseless unsparing inexorable unintermitted fluid frictionless unstoppable accustomed long-l sedulous unalleviated hard harsh stern without ceasing unflinching pushy duplicative implacable all day long maintained 24-hour habituated unaltering through straightforward in succession nonrandom sound rigid beyond measure inflexible unconstrained uncontrolled unchecked unrestrained unruffled profound deep progressive all-year-round homogeneous unconditional unrestricted unbridled long-winded with no let-up balanced matching alike 24/7 solid as rock without limits wearisome for ever and ever sure lavish like the Rock of Gibralter monolithic without a break without surcease abundant abounding infallible full utter tedious seemingly endless with no holds barred rambling laborious ponderous meandering certain never-failing unbound looped fail-safe loyal surefire faithful can't-miss unerring true strung out spun out dragged out not stopping having no end extendable viable dyed-in-the-wool tried-and-true delivering there come-through trustworthy tried and true tried and tested counted on rock solid replenishable bountiful frequentative

annual yearly once-a-year anniversary twelve-monthly every twelve months each year every year once yearly year end once a year perennial regularly annually per annum a year's worth year on year year by year

yearly yearly checkup yearly observance yearn yearned yearned for yearlings yearling year in, year out year in year out yearhundreds yearhundred