Definition for Perpetual:

• per-pet'[= u]- al, adj. never ceasing: everlasting: not temporary.-- adv. PERPET'UALLY.-- PERPETUAL CURATE, a curate of a parish where there was neither rector nor vicar, the tithes being in the hands of a layman-- abolished in 1868, every incumbent not a rector now being a vicar; PERPETUAL MOTION, motion of a machine arising from forces within itself, constantly kept up without any force from without; PERPETUAL SCREW, an endless screw. [ Fr. perpétuel-- L. perpetuus, continuous.]

Synonyms for Perpetual:

• adj.

  •abiding (adjective)
  • steadfast,
  • steady,
  • enduring.
  •continual, lasting (adjective)
  • eternal,
  • abiding,
  • never-ceasing,
  • unfailing,
  • immortal,
  • persistent,
  • unceasing,
  • enduring,
  • undying,
  • everlasting,
  • uninterrupted,
  • interminable,
  • repeating,
  • perennial,
  • permanent,
  • unremitting,
  • never-ending,
  • repeated,
  • recurrent,
  • returning,
  • continuous,
  • reoccurring,
  • ceaseless,
  • Recurring,
  • sempiternal,
  • continued,
  • incessant,
  • constant,
  • unchanging,
  • repetitious,
  • unending,
  • endless,
  • infinite,
  • imperishable,
  • going on,
  • perdurable,
  • without end,
  • intermittent.
  •continuing (adjective)
  • unending.
  •continuous (adjective)
  • flat,
  • lasting,
  • regular,
  • no end of,
  • nonstop,
  • featureless,
  • continuous,
  • gapless,
  • sequential,
  • incessant,
  • repeated,
  • cyclical,
  • even,
  • seamless,
  • recurrent,
  • unchanging,
  • homogeneous,
  • perennial,
  • indefatigable,
  • steady,
  • unremitting,
  • habitual,
  • connected,
  • ceaseless,
  • continual,
  • constant,
  • persistent,
  • straight,
  • everlasting,
  • consecutive,
  • unending,
  • undeviating,
  • robot-like,
  • consistent,
  • monolithic,
  • unceasing,
  • unvarying,
  • monotonous,
  • undying,
  • invariable,
  • unchangeable,
  • interminable,
  • repetitive,
  • continuing,
  • unbroken,
  • un-intermittent,
  • coherent,
  • endless,
  • uniform,
  • level.
  •durable (adjective)
  • livelong,
  • long,
  • lengthy,
  • prolonged,
  • interminable,
  • enduring,
  • durable,
  • lasting,
  • eternal,
  • everlasting,
  • incessant,
  • lifelong,
  • lifetime,
  • perennial,
  • long-life.
  •frequent (adjective)
  • frequent.
  •habitual (adjective)
  • habitual,
  • repetitious.
  •imperishable (adjective)
  • imperishable.
  •infinite (adjective)
  • without number,
  • bottomless,
  • innumerable,
  • incalculable,
  • eternal,
  • without limit,
  • numberless,
  • limitless,
  • boundless,
  • interminable,
  • unbounded,
  • unlimited,
  • infinite,
  • Termless,
  • countless,
  • timeless,
  • ceaseless,
  • immeasurable,
  • immemorial,
  • undefined,
  • inexhaustible,
  • everlasting,
  • endless,
  • illimitable.
  •never-ending (adjective)
  • undying,
  • neverending,
  • ceaseless.
  •old (adjective)
  • of long standing.
  •permanent (adjective)
  • enduring,
  • constant,
  • unchangeable,
  • everlasting,
  • fixed,
  • abiding,
  • immutable,
  • changeless,
  • permanent,
  • perduring,
  • standing,
  • lasting,
  • persistent.
  •recurrent (adjective)
  • frequent,
  • repeating.
  •running (adjective)
  • running.
  •sempiternal (adjective)
  • sempiternal.
  •unaltered (adjective)
  • unchanged.
  •unchanged (adjective)
  • unvaried.
  •unrelenting (adjective)
  • unabated.

• n.

  •
  • frequently,
  • often,
  • regularly,
  • imperishable,
  • transitory,
  • frequent,
  • never-ceasing,
  • short,
  • common,
  • repeatedly,
  • sempiternal,
  • immortal.
  •
  • constantly,
  • returning,
  • annual,
  • repetitious,
  • necessarily,
  • intermittent,
  • ever,
  • repeating,
  • hourly,
  • always,
  • invariably.
  •
  • continue,
  • Eterne,
  • amaranthine.
  •
  • relentless,
  • round the clock,
  • ongoing,
  • unfailing.
  •perpetual (noun)
  • ageless,
  • uninterrupted,
  • unremitting,
  • eternal,
  • everlasting,
  • continuous,
  • endless,
  • permanent,
  • constant,
  • lasting,
  • unceasing,
  • incessant,
  • continual,
  • never-ending,
  • unending,
  • ceaseless.

• Other synonyms:

  •
  • amaranthine,
  • frequently,
  • round the clock,
  • often,
  • most,
  • repeatedly,
  • always,
  • regularly.
  •
  • ongoing,
  • Eterne,
  • common.
  •
  • relentless.
  •binding
  • indissoluble.
  •inveterate
  • chronic.
  •lasting
  • perdurable.
  •long-lasting
  • long-lived.
  •persistent
  • never-ceasing.
  •sempiternal
  • never-dying.
  •unaltered
  • unchanged.
  •Other relevant words:
  • diocesan,
  • quiescent,
  • of long standing,
  • enormous,
  • preacher,
  • eminence,
  • Illimited,
  • ongoing,
  • many times,
  • long shot,
  • infernal,
  • on-going,
  • without end,
  • steadfast,
  • running mate,
  • unadulterated,
  • candidate,
  • conformable,
  • suffragan,
  • transitory,
  • short,
  • blame,
  • creative,
  • blessed,
  • deathless,
  • shaping,
  • intact,
  • damned,
  • unmeasured,
  • Diuturnal,
  • torpid,
  • immobile,
  • unaltered,
  • annual,
  • long-lasting,
  • inveterate,
  • politician,
  • Ecclesiarch,
  • ever,
  • luminous,
  • gross,
  • highest,
  • no end of,
  • sacred,
  • long-standing,
  • round the clock,
  • vast,
  • all-inclusive,
  • hardened,
  • unfading,
  • vibrating,
  • fiscal year,
  • remaining,
  • perfect,
  • old,
  • pulsating,
  • one,
  • lecturer,
  • most,
  • unabated,
  • never-ending,
  • numinous,
  • often,
  • damn,
  • sodding,
  • oscillating,
  • extensive,
  • curate,
  • glorious,
  • non-stop,
  • relentless,
  • revivalist,
  • thick,
  • persisting,
  • utter,
  • habit,
  • Unintermitting,
  • customary,
  • vital,
  • ubiquitous,
  • hopeful,
  • unstoppable,
  • incomprehensible,
  • Coeternal,
  • elder,
  • myriad,
  • Eterne,
  • leap year,
  • thoroughgoing,
  • lobbyist,
  • shoo-in,
  • static,
  • deuced,
  • without limit,
  • measureless,
  • Sumless,
  • immortal,
  • ancient,
  • perdurable,
  • omnipotent,
  • beneficiary,
  • unconfined,
  • uninterrupted,
  • metropolitan,
  • unmeasurable,
  • long-term,
  • frequent,
  • double-dyed,
  • pure,
  • Unintermitted,
  • merciful,
  • loving,
  • rigid,
  • machine gun,
  • omniscient,
  • majestic,
  • sovereign,
  • sempiternal,
  • propagandist,
  • activist,
  • unfathomable,
  • all-time,
  • rapid,
  • always,
  • consummate,
  • running,
  • repeatedly,
  • Sempervirent,
  • intransitive,
  • chaplain,
  • continue,
  • Intransmutable,
  • Uncircumscribed,
  • parson,
  • unrestricted,
  • unfailing,
  • unrestrained,
  • arrant,
  • goddam,
  • never-ceasing,
  • primate,
  • reader,
  • undefined,
  • contributor,
  • all-seeing,
  • returning,
  • constantly,
  • immense,
  • repetitious,
  • canon,
  • antique,
  • eonian,
  • solid,
  • radiant,
  • tough,
  • unnumbered,
  • complete,
  • omnipresent,
  • stable,
  • same,
  • Exhaustless,
  • deacon,
  • stationary,
  • deaconess,
  • darned,
  • undestroyed,
  • goddamn,
  • Longevous,
  • hardy,
  • unstopped,
  • Unshifting,
  • hourly,
  • indissoluble,
  • amaranthine,
  • standing,
  • ageless,
  • invariant,
  • dark horse,
  • incumbent,
  • prelate,
  • reverence,
  • indefinite,
  • Creating,
  • supporter,
  • neverending,
  • unflagging,
  • repeating,
  • blasted,
  • unrelenting,
  • according to rule,
  • supreme,
  • unvaried,
  • having no end,
  • chattering,
  • archbishop,
  • untold,
  • perennial plant,
  • unapproachable,
  • never-dying,
  • protractile,
  • stark,
  • common,
  • rector,
  • aeonian,
  • unchanged,
  • firm,
  • unplumbed,
  • blamed,
  • office-seeker,
  • calendar year,
  • hierarch,
  • favorite son,
  • Indesinent,
  • hallowed,
  • Interminate,
  • necessarily,
  • Subdean,
  • backer,
  • without number,
  • aspirant,
  • Residentiary,
  • never-failing,
  • holy,
  • inviolate,
  • vicar,
  • good,
  • dean,
  • aged,
  • stuttering,
  • Overlong,
  • goddamned,
  • of long duration,
  • regularly,
  • bishop,
  • ingrained,
  • reoccurring,
  • going on,
  • Recurring,
  • staccato,
  • all-knowing,
  • all-comprehensive,
  • front-runner,
  • capitular,
  • All-wise,
  • imperishable,
  • archdeacon,
  • established,
  • perduring,
  • invariably,
  • Longeval,
  • long-lived,
  • frequently,
  • Everduring,
  • evergreen,
  • ever-living,
  • incorruptible,
  • frozen,
  • mortal,
  • Intransient,
  • staring,
  • prebendary,
  • changeless,
  • Shoreless,
  • universal,
  • indestructible,
  • confirmed,
  • rural dean,
  • creation,
  • missionary,
  • chronic,
  • unrelieved,
  • making,
  • unfaltering,
  • almighty,
  • Everliving,
  • sustained,
  • continued,
  • unchecked,
  • just,
  • all-powerful,
  • party hack,
  • macrobiotic,
  • dateless,
  • around-the-clock,
  • Staying.

Antonyms for Perpetual:

• adj.

  • continual, lasting
    completed, ephemeral, Ceasing, ending, intermittent, interrupted, stopping, changeable, momentary, discontinuous, finite, fleeting, halting, irregular, finished, terminable, limited, bounded, temporary, transient, brief, changing.
  • Other antonyms:
    outdated, out-of-date, erratic, spasmodic, irregular, obsolete, fitful, alternate, outworn, cyclic, noncontinuous, outmoded, occasional, archaic, mortal, serial, alternating, rhythmic, spotty, unsteady, antiquated, dated, passe, seasonal, sporadic.