Antonym of so persuasive

unconvincing ineffective weak feeble flimsy implausible inconclusive incredible indecisive invalid uncompelling unpersuasive dampening discouraging disheartening dissuasive illogical impotent improbable incapable ineffectual unbelievable unimpressive unlikely unreasonable unsound useless irrational futile fruitless unproductive fallacious vain false unfounded worthless unsuccessful groundless pointless unavailing faulty inefficacious spurious unprofitable incorrect profitless flawed erroneous abortive wrong bootless specious empty inadequate nonrational unjustified idle senseless hopeless unjustifiable otiose poor preposterous untenable inconceivable barren inconsequential failed nonsensical fantastic inefficient doubtful absurd nugatory foolish purposeless unthinkable dubious silly illegitimate inferior stupid unreasoned fanciful pathetic unimaginable contradictory inept inconsequent ridiculous ludicrous questionable incompetent inconsistent fantastical feckless sophistic idiotic lame crazy counterproductive unrealistic paltry sophistical insane inutile impossible mad unscientific incongruous incredulous inexpedient nutty unfruitful suspect powerless wacky inoperative thin inane null casuistic unconceivable hollow meaningless fishy daft hamstrung unsubstantial debatable unfructuous farfetched limited puzzling average anticlimactic perverse unfit ambiguous vague unsettled tall ordinary indeterminate reachy fatuous unable irreconcilable mediocre barmy open indefinite uncertain indifferent undetermined problematic void imbecilic obscure trifling strained moot unresolved undecided unconfirmed unproved uninspiring forced labored shallow ponderous transparent proving nothing resolving nothing remote laboured unsatisfactory leaving matters open insubstantial strange left hanging up in the air far-fetched non-successful not yet established scarcely credible still open to doubt still open to question to no avail cock-and-bull beyond belief off beam hard to swallow to no effect hard to believe hard to take way out not likely half-baked difficult to believe full of holes not convincing not making sense cock and bull beyond the bounds of possibility unreliable incomplete incoherent meek disputable insufficient baseless unimportant insignificant deficient imperfect lacking insipid mild forceless unintelligent unplausible controvertible irrelevant immaterial shaky unacceptable impactless problematical arguable unremarkable rambling disputed doubtable iffy controversial unsubstantiated unmoving unproven unwarranted untrustworthy speculative uninfluential bland helpless apathetic nonvalid unforceful moderate unsupported ill-founded ignorant wanting substandard half-hearted raw untrained unqualified unsure inapt failing defective flabby immature lousy understated toothless derisory laughable unpronounced unprepared not credible fabulous undependable muddled unbelieveable unreasoning reasonless unfair full of it unsatisfying unfinished contestable debated equivocal academical refutable hypothetical negotiable theoretic answerable theoretical academic contradictable uneventful broken vulnerable Unsupported gentle lethargic inactive passive bad foundationless untrue sham bogus unrecognized dodgy cryptic unprovable distant unhealthy apocryphal suspicious misguided disreputable gratuitous imaginary oracular uninformed illusory causeless fake dubitable dispirited superficial lifeless unexciting uncorroborated shady unenthusiastic nominal boring static tame unemotional vapid dull uncalled for without explanation without basis uncalled-for without justification without cause without foundation without reason not backed up needless trivial usual unimposing casual insincere dumb inconspicuous unhelpful unverified unrecognised banal contentious unclear soft forlorn uninteresting unnecessary redundant nongermane aimless superfluous wasted purportless comedic untheatrical to no purpose resultless no dice in vain sterile undramatic not pertinent going nowhere around in circles commonplace

uninfluential insignificant inconsequential infinitesimal irrelevant trivial pointless trifling immaterial inconsiderable meagre meager meaningless paltry petty purportless anonymous casual feeble flimsy frail helpless inappreciable incompetent inept inexpert infirm minimal nameless obscure senseless uncelebrated unfit unknown unqualified unskilled unskillful light lightweight little nonessential nugatory slight small unsubstantial nondescript unimportant faint languid low muffled quiet soft unimpressive

inarticulate ineloquent unexpressive unvocal faltering halting hesitant speechless stumbling tongue-tied wordless apathetic calm cold cool dispassionate dull frigid impotent indifferent ineffective introverted shy unaffecting unenthusiastic unexcited unmoving weak hesitating solid unprepared effortful stammering nonliquid unfluent quiet

weak ambitionless unaggressive unambitious unassertive unenterprising feeble nonassertive nonemphatic submissive unconvincing unemphatic unimpressive unpersuasive characterless diffident discreet forgettable inconspicuous languid mild quiet undistinguished unexceptional unimposing unmemorable unspectacular apathetic dull energyless idle impotent indifferent lackadaisical languorous lazy lethargic listless otiose passive pococurante sluggish somnolent timid torpid unenthusiastic weary laid-back low-pressure easy

awkward bad-mannered cantankerous clumsy coarse crass crude discourteous ignorant ill-bred ill-mannered impolite inurbane loud lubberly oafish philistine rough rude slobbish tasteless uncivilised uncivilized uncultivated uncultured uneducated ungentlemanly ungracious unpoised unpolished unrefined unsavory unsavoury unsophisticated vulgar boorish callow churlish classless clownish gauche loutish uncouth unworldly broken intermittent uncool curt inconsiderate intolerable nasty abusive unmannered obscene foul unpleasing unladylike unappealing obnoxious gross mannerless unmannerly graceless mean scurrilous detestable offensive unfriendly uncivil disagreeable repelling repellant brutish repellent indecent illiberal tactless bawdy brusque unlikable harsh profane naughty wanton incult indecorous grody blasphemous unlikeable smutty immature dislikeable lewd repulsing impure indelicate hateful loathsome despicable filthy savage reprehensible sleazy licentious raffish vile dirty sordid gruff ribald cloddish heinous lowbred scatological rough-hewn scatologic loud-mouthed lascivious Rabelaisian salacious lowbrow foul-mouthed

demotivating demotivational daunting demoralising demoralizing deterring discouraging disheartening dispiriting dissuading disenchanting dejecting depressing

antagonising antagonizing cold despicable disgusting

inarticulate unintelligible incomprehensible ineloquent incoherent indistinct disjointed mumbled unclear confused hesitant hesitating muddled mumbling stammering stuttering dumb garbled halting inaudible jumbled maundering muffled muttered rambling stumbling vague awkward clumsy faltering misrepresented obscure unvocal blurred mute poorly-spoken silent speechless tongue-tied voiceless poorly spoken

dull bland boring mundane naive banal dim dimwitted dim-witted dulled vapid brainless lackluster lacklustre obtuse pedestrian stale ignorant lame mind-numbing monotonous slow slow-witted cretinous dense mindless stupid thick vacuous daft doltish senseless simple sluggish unintelligent bromidic feeble lamebrained tedious unexciting uninteresting blunt blunted fatuous insipid numbing prosaic simpleminded uninspiring unintellectual unremarkable unsmart unstimulating weak witless dull-witted half-witted simple-minded weak-minded

defamatory

uninspiring boring drab dreary lifeless mundane tedious tiresome bland flat humdrum insipid lackluster lacklustre passionless plain soulless spiritless tame unexciting uninteresting dull forgettable monotonous pedestrian slow sterile tired uneventful unimaginative unremarkable unstimulating banal characterless longwinded undistinguished vapid wooden lame leaden nondescript prosaic routine stale tiring trite vanilla wearisome jading mechanical plodding ponderous yawnsome mind-numbing run of the mill long-winded run-of-the-mill bog-standard ho hum ho-hum lacking excitement lacking interest

nonaggressive peaceful weak

abhorrent abominable detestable hateful loathsome odious unattractive unendearing uningratiating unlovable disagreeable irksome offensive off-putting repellent tiresome unappealing unpleasant unprepossessing uninviting repulsive undesirable boring disenchanting disgusting distasteful ugly

inconclusive anticlimactic confusing inexpressive mysterious uncommunicative

casual apathetic feeble lackadaisical moderate perfunctory weak dispassionate lacklustre listless faint spiritless facile light impassive superficial cursory reluctant tepid indifferent insignificant unenthusiastic lackluster unsubstantial lukewarm nonurgent unwilling languid noncritical uninterested inessential irresolute unconcerned half-hearted

sophic sophism sophist sophistic sophistical sophisticate sop sooty sootless sootily sootiest sootier