Synonyms for Indefatigable:

• adj.

  •all (adjective)
  • indefatigable.
  •assiduous (adjective)
  • whizest,
  • steady,
  • whizer,
  • most plugging,
  • ex acting,
  • more plugging,
  • ex-acting.
  •ceaseless (adjective)
  • most world without end,
  • more world without end,
  • inter-minable,
  • un-interrupted,
  • more world-without-end,
  • un ceasing,
  • un-ending,
  • in-terminable,
  • un ending,
  • eternal,
  • un-remitting,
  • inter minable,
  • most world-without-end,
  • un-ceasing,
  • in terminable,
  • un interrupted,
  • day night,
  • non stop,
  • round clock,
  • un remitting.
  •continuous (adjective)
  • interminable,
  • coherent,
  • unceasing,
  • continuous,
  • monolithic,
  • endless,
  • monotonous,
  • repetitive,
  • everlasting,
  • level,
  • unchanging,
  • homogeneous,
  • consecutive,
  • habitual,
  • unbroken,
  • uniform,
  • continual,
  • un-intermittent,
  • continuing,
  • cyclical,
  • featureless,
  • unchangeable,
  • seamless,
  • incessant,
  • perennial,
  • consistent,
  • even,
  • lasting,
  • robot-like,
  • regular,
  • unvarying,
  • undying,
  • constant,
  • unending,
  • sequential,
  • gapless,
  • invariable,
  • recurrent,
  • ceaseless,
  • repeated,
  • perpetual,
  • flat,
  • straight,
  • nonstop,
  • connected.
  •diligent (adjective)
  • more diligent,
  • more persisting,
  • Operose,
  • un relenting,
  • un-relenting,
  • steadfast,
  • grindest,
  • most persisting.
  •dogged (adjective)
  • hard-nosed,
  • most hardheaded,
  • un yielding,
  • hard nosed,
  • un-shakable,
  • un-bending,
  • more hard nosed,
  • in exorable,
  • re-solute,
  • more perseverant,
  • un bending,
  • in-flexible,
  • un-yielding,
  • single minded,
  • most perseverative,
  • most perseverant,
  • in flexible,
  • in-exorable,
  • staunch,
  • hardheaded,
  • more perseverative,
  • un shakable,
  • re solute.
  •energetic (adjective)
  • strenuous,
  • ball of fire,
  • red-blooded,
  • kinetic,
  • highpowered,
  • forcible,
  • stalwart,
  • demoniac.
  •hardworking (adjective)
  • laborious.
  •hardy (adjective)
  • ablebodied,
  • more acclimatized,
  • mightiest,
  • most acclimatized,
  • most inured,
  • hale,
  • able bodied,
  • more inured.
  •inexhaustible (adjective)
  • most unwearying,
  • in exhaustible,
  • un wearying,
  • un-wearying,
  • more unwearying,
  • in-exhaustible.
  •persevering (adjective)
  • indomitable,
  • enduring,
  • brave,
  • surviving,
  • abiding,
  • stoical,
  • tenacious,
  • patient,
  • unwavering.
  •persistent (adjective)
  • never ending,
  • bound determined,
  • most bulldogged,
  • more bulldogged.
  •resolute (adjective)
  • insistent,
  • earnest,
  • fearless,
  • implacable,
  • deliberate,
  • bold,
  • inexorable,
  • firm,
  • loyal,
  • dauntless,
  • devoted,
  • dedicated,
  • decided,
  • tough,
  • resolved,
  • strong-willed,
  • reliable,
  • thorough,
  • faithful,
  • iron-willed,
  • strong-minded,
  • stubborn,
  • decisive,
  • uncompromising,
  • relentless,
  • unshakeable,
  • unyielding,
  • courageous,
  • valiant,
  • resolute,
  • steely,
  • true,
  • willing,
  • hearty,
  • unbending,
  • serious,
  • bullheaded,
  • headstrong,
  • set,
  • determined,
  • spunky,
  • unflinching,
  • zealous,
  • plucky,
  • intent,
  • ruthless,
  • committed,
  • stern.
  •rugged (adjective)
  • most well built,
  • most well-built,
  • more well-built,
  • well built,
  • wellbuilt,
  • more well built,
  • more wellbuilt,
  • most wellbuilt.
  •tenacious (adjective)
  • obstinate,
  • obdurate,
  • hard,
  • strong,
  • fervent,
  • stony,
  • undaunted,
  • stiff,
  • flintlike.
  •tireless (adjective)
  • on go,
  • hard working,
  • most hard-working,
  • most hard working,
  • more hard working,
  • more hyper,
  • more hard-working.
  •unfaltering (adjective)
  • un swerving,
  • un qualified,
  • more stiff necked,
  • more stiffnecked,
  • un faltering,
  • un questioning,
  • un flappable,
  • un wavering,
  • most never-failing,
  • un-swerving,
  • un-flinching,
  • more neverfailing,
  • un flinching,
  • un-questioning,
  • un-failing,
  • un failing,
  • un-faltering,
  • stiffnecked,
  • most neverfailing,
  • un-wavering,
  • neverfailing,
  • stiff necked,
  • most stiffnecked,
  • going the way,
  • going way,
  • most stiff-necked,
  • never failing,
  • un-qualified,
  • going all way,
  • more stiff-necked,
  • more never-failing,
  • most never failing,
  • most stiff necked,
  • more never failing.
  •unflagging (adjective)
  • un flagging,
  • un retiring,
  • more unretiring,
  • un-flagging,
  • un-retiring,
  • more undeviating,
  • most unretiring,
  • un-deviating.
  •untiring (adjective)
  • GOGO,
  • stop at nothing,
  • fireball,
  • go-go,
  • undeterred.
  •unwearied (adjective)
  • un-wearied,
  • un wearied.

• n.

  •
  • animated.
  •inexhaustible (noun)
  • active.

• Other synonyms:

  •
  • enthusiastic.
  •Other relevant words:
  • notable,
  • on one's toes,
  • sticking,
  • enterprising,
  • audacious,
  • sustained,
  • sleepless,
  • hardworking,
  • plodding,
  • uninterrupted,
  • exhaustive,
  • Hustling,
  • meticulous,
  • persisting,
  • bound and determined,
  • unalterable,
  • peppy,
  • adamant,
  • ironclad,
  • pertinacious,
  • careful,
  • stable,
  • inflexible,
  • zippy,
  • rigid,
  • unhesitant,
  • bulldog,
  • remorseless,
  • focused,
  • Unrelaxing,
  • deep-rooted,
  • ardent,
  • stanch,
  • fixed,
  • solid,
  • daring,
  • high-powered,
  • intense,
  • invigorated,
  • dependable,
  • inalterable,
  • rapt,
  • busy,
  • never-tiring,
  • immutable,
  • redoubtable,
  • irreversible,
  • attentive,
  • Unintermitting,
  • remaining,
  • spirited,
  • scrupulous,
  • unfailing,
  • unshaken,
  • painstaking,
  • unshakable,
  • attention,
  • merciless,
  • hardy,
  • sturdy,
  • adventurous,
  • industrious,
  • avid,
  • fast,
  • unafraid,
  • zingy,
  • aggressive,
  • purposeful,
  • resourceful,
  • unswerving,
  • tried and true,
  • Plugging,
  • unbeatable,
  • permanent,
  • trusty,
  • unhesitating,
  • workaday,
  • invincible,
  • full of beans,
  • unsleeping,
  • unstoppable,
  • unsparing,
  • businesslike,
  • unconquerable,
  • vehement,
  • intrepid,
  • full of pep,
  • pitiless,
  • single-minded,
  • nose to grindstone,
  • detailed,
  • preoccupied,
  • zestful,
  • goal-oriented,
  • ambitious,
  • hell-bent,
  • eager,
  • sincere,
  • purposive,
  • immovable,
  • unstinting,
  • slogging,
  • unabating,
  • go ahead,
  • hot,
  • pushy,
  • undiscouraged,
  • punctilious,
  • changeless,
  • unrelenting,
  • venturesome,
  • conscientious,
  • concentrated,
  • Staying,
  • keen,
  • Undrooping,
  • mettlesome.

Paraphrases for Indefatigable:

• Equivalence

  • Adjective
    tireless, untiring.
  • Noun, singular or mass
    tireless, untiring.

• Independent

  • Adjective
    persistent, sustained, steadfast, consistent, constant.

• Other Related

  • Adjective
    unflagging, relentless, diligent, ceaseless, unfailing, assiduous, tenacious, unwavering.

Antonyms for Indefatigable:

• adj.

  • untiring
    fatigued, negligent, idle, lethargic, tired, changing, wavering, weary, indifferent, inactive.
  • Other antonyms:
    done in, broken, drained, listless, desultory, lazy, enervated, apathetic, tuckered, languid, Overworked, casual, shiftless, indolent, jaded, burned-out, spent, spiritless, laggard, sluggish, slothful, overtaxed, wearied, beat, lackadaisical, played out, worn-out.

• Other antonyms:

  • n.
    Defatigable, unenrgetic.