Synonyms for In-effective:

• adj.

  •abortive (adjective)
  • Miscarried,
  • ineffective,
  • useless,
  • failed,
  • failing.
  •disappointing (adjective)
  • unsatisfying,
  • distasteful,
  • disheartening,
  • bitter,
  • displeasing,
  • unhappy,
  • falling short,
  • unpleasant,
  • disconcerting,
  • unfulfilling,
  • discouraging,
  • disagreeable,
  • frustrating,
  • depressing.
  •feckless (adjective)
  • weak,
  • irresponsible,
  • hopeless,
  • aimless,
  • incautious,
  • reckless,
  • uncareful,
  • shiftless,
  • fustian,
  • wild,
  • good-for-nothing,
  • careless,
  • meaningless,
  • carefree.
  •fruitless (adjective)
  • infertile,
  • in vain,
  • spinning one's wheels,
  • pointless,
  • sterile,
  • to no avail,
  • unprolific,
  • to no effect,
  • wild goose chase,
  • Gainless,
  • empty,
  • profitless.
  •futile (adjective)
  • forlorn,
  • unsubstantial,
  • trivial,
  • impractical,
  • unsatisfactory,
  • exhausted,
  • unneeded,
  • out the window,
  • no dice,
  • unreal,
  • save one's breath,
  • Resultless,
  • hollow,
  • otiose,
  • to no purpose,
  • impracticable,
  • on a treadmill,
  • insufficient,
  • unimportant,
  • trifling,
  • valueless,
  • delusive.
  •impotent (adjective)
  • effete,
  • prostrate,
  • incapable,
  • helpless,
  • crippled,
  • frail,
  • paralyzed,
  • paper tiger,
  • enfeebled,
  • infirm,
  • nerveless,
  • gutless,
  • dud,
  • enervated,
  • incapacitated,
  • Infecund.
  •incapable (adjective)
  • butterfingers,
  • unequipped,
  • uncool,
  • poor,
  • inproficient,
  • not equal to,
  • unfit,
  • losing,
  • unskilled,
  • unskillful,
  • unqualified,
  • unsuited,
  • ineligible,
  • disqualified,
  • naive,
  • not up to,
  • inexpert,
  • inexperienced.
  •ineffective (adjective)
  • void,
  • unsuccessful,
  • slack-spined,
  • barren,
  • feckless,
  • idle,
  • inferior,
  • inefficient,
  • ineffectual,
  • inadequate,
  • abortive,
  • innocuous,
  • indecisive,
  • withered,
  • not effective,
  • inept,
  • nugatory,
  • anticlimactic,
  • unavailable,
  • unable,
  • paltry,
  • lame,
  • bootless,
  • spineless,
  • vain,
  • worthless,
  • inefficacious,
  • no way,
  • unfruitful,
  • limited,
  • unprofitable,
  • powerless,
  • no go,
  • defeasible,
  • neutralized,
  • inoperative,
  • unproductive,
  • feeble,
  • impotent,
  • forceless,
  • incompetent,
  • fruitless,
  • emasculate,
  • unavailing,
  • null,
  • futile.
  •inefficient (adjective)
  • faulty,
  • improficient,
  • sloppy,
  • slipshod,
  • disorganized,
  • prodigal,
  • can't hack it,
  • shooting blanks,
  • improvident,
  • unprepared,
  • untrained,
  • slack,
  • extravagant,
  • half-baked,
  • slovenly,
  • not cut out for.
  •lame (adjective)
  • unsuitable,
  • flimsy,
  • unpleasing,
  • unpersuasive,
  • thin,
  • unconvincing,
  • faltering,
  • flabby.
  •no-account (adjective)
  • Drossy.
  •null (adjective)
  • characterless,
  • bad,
  • absent,
  • negative,
  • nonexistent,
  • null and void,
  • nothing,
  • invalid,
  • unsanctioned,
  • imaginary.
  •otiose (adjective)
  • indolent,
  • lazy,
  • surplus,
  • slothful,
  • inactive,
  • superfluous,
  • laggard.
  •pale (adjective)
  • sick,
  • doughy,
  • faded,
  • waxen,
  • pasty,
  • dim,
  • ashen,
  • waxlike,
  • lurid,
  • haggard,
  • deathlike,
  • faint,
  • sallow,
  • cadaverous,
  • pallid,
  • blanched,
  • spectral,
  • white,
  • gray,
  • bleached,
  • sickly,
  • anemic,
  • livid,
  • bloodless,
  • ghastly,
  • wan,
  • dull,
  • colorless,
  • washed-out,
  • insubstantial,
  • whitish,
  • ashy.
  •pointless (adjective)
  • insignificant,
  • irrelevant,
  • around in circles,
  • Purportless,
  • nongermane,
  • unnecessary,
  • uninteresting,
  • stupid,
  • vague,
  • remote,
  • needle in haystack,
  • absurd,
  • going nowhere,
  • on treadmill,
  • inconsequential,
  • not pertinent,
  • nonsensical,
  • inane,
  • silly,
  • in vicious circle.
  •powerless (adjective)
  • blank,
  • passive,
  • inert,
  • etiolated,
  • wishy-washy,
  • wimp,
  • subject,
  • disabled,
  • tied,
  • unarmed,
  • supine,
  • vulnerable,
  • debilitated,
  • chicken,
  • disenfranchised,
  • out of gas,
  • dependent,
  • defenseless.
  •spineless (adjective)
  • fearful,
  • timid,
  • submissive,
  • squeamish,
  • weak-willed,
  • faint-hearted,
  • vacillating,
  • soft,
  • yellow,
  • yellow-bellied,
  • weak-kneed,
  • Pithless,
  • invertebrate,
  • frightened,
  • spiritless,
  • amoebalike,
  • lily-livered,
  • irresolute.
  •unfit (adjective)
  • bush league,
  • unproficient,
  • maladjusted,
  • out of place,
  • Blundering,
  • out of element,
  • poorly,
  • unlikely,
  • down,
  • inappropriate,
  • improper,
  • rocky,
  • below par,
  • unbecoming,
  • inapplicable,
  • clumsy,
  • inexpedient,
  • maladroit,
  • Unapt,
  • unhealthy,
  • inharmonious,
  • decrepit,
  • out of shape,
  • unpromising,
  • incongruous,
  • Unmeet,
  • ill-suited,
  • no good,
  • can't make the grade,
  • unpracticed,
  • infelicitous,
  • ill-adapted,
  • uncongenial,
  • not fit,
  • mistaken,
  • incompatible,
  • awkward,
  • incorrect,
  • heavy-handed,
  • laid low,
  • Unhandy,
  • bungling,
  • dragging,
  • ill-equipped,
  • Butter-fingered,
  • discordant,
  • amateur,
  • unfitted.
  •unsuccessful (adjective)
  • disastrous,
  • foiled,
  • unlucky,
  • ill-fated,
  • defeated,
  • thwarted,
  • doomed.
  •unworkmanlike (adjective)
  • inapt.
  •useless (adjective)
  • Unpurposed,
  • scrap,
  • nonfunctional,
  • counterproductive,
  • purposeless,
  • unworkable,
  • unusuable,
  • waste,
  • expendable,
  • of no use,
  • inutile,
  • dysfunctional,
  • unfunctional,
  • disadvantageous.
  •void (adjective)
  • unconfirmed,
  • dead,
  • set aside,
  • unenforceable,
  • Avoided,
  • Voided,
  • not viable,
  • negated,
  • unratified.
  •wan (adjective)
  • worn,
  • pale,
  • peaked,
  • bilious,
  • discolored.
  •weak (adjective)
  • immature,
  • slight,
  • lacking,
  • incomplete,
  • shallow,
  • handicapped,
  • raw,
  • unsure,
  • thick,
  • shaky,
  • wanting,
  • small,
  • implausible,
  • inconclusive,
  • substandard,
  • improbable,
  • unbelievable,
  • inconceivable,
  • pathetic,
  • incredible,
  • slim,
  • green.
  •wishy-washy (adjective)
  • flat,
  • watery,
  • mediocre,
  • listless,
  • banal,
  • jejune,
  • vapid,
  • watered-down,
  • insipid,
  • sapless,
  • tasteless,
  • languid,
  • cowardly,
  • flavorless,
  • namby-pamby,
  • wavering.
  •worthless (adjective)
  • base,
  • abject,
  • wretched,
  • no-account,
  • no-good,
  • cheap,
  • despicable,
  • unessential,
  • contemptible,
  • abandoned,
  • ignoble,
  • trashy,
  • unusable,
  • bogus,
  • miserable.

Antonyms for In-effective:

• adj.

  • abortive
    consummated, complete.
  • disappointing
    pleasant, pleasing, encouraging, agreeable.
  • feckless
    responsible, purposeful.
  • fruitless
    plentiful, copious.
  • futile
    hopeful, helpful.
  • impotent
    skilled, fertile.
  • incapable
    ready, suitable, qualified, experienced.
  • ineffective
    dexterous, capable, skillful, successful, useful, able, efficient, sufficient, fit, powerful, profitable, competent, effectual, valuable, worthy, productive, expert, fruitful, adequate, effective, potent, strong, worthwhile.
  • inefficient
    sound, tidy, neat.
  • lame
    Uncrippled, satisfactory, walking, agile, mobile.
  • no-account
    superior.
  • null
    valid, good, true, filled, full.
  • pale
    colored, clear, smart, healthy, heavy, dark, flushed, light, distinct, bright, glowing, intelligent, radiant, colorful, happy.
  • pointless
    consequential, beneficial, significant, important, necessary, pointed, wise, sensible, meaningful.
  • powerless
    dominant, lively, active.
  • spineless
    brave, bold.
  • unfit
    proper, willing, appropriate.
  • unsuccessful
    lucky.
  • useless
    working, usable.
  • void
    occupied.
  • wan
    fresh, blushing.
  • weak
    enough, confident, concentrated, loud, noisy, secure, protected, guarded, safe, firm.
  • wishy-washy
    exciting, interesting, dynamic.