Từ trái nghĩa của greatly reliable

unreliable untrustworthy undependable dodgy uncertain unsafe irresponsible bad broken corrupt deceptive dishonest evil false fraudulent inadequate indefinite intermittent soft unfixed unreal unrespectable unstable unsteady unsuitable unsure vulnerable weak wobbly unfaithful useless disloyal ineffective inaccurate incompetent erratic inept inconstant unpredictable incapable inefficient untrustable irresolute poor untruthful democratic unfriendly cool questionable shady fake fallible ephemeral capricious faithless changing failing impermanent limited fickle flighty hopeless unconscientious unskillful insufficient unproficient ineffectual immature pathetic deficient nonaccountable amateur inferior unequipped skill-less substandard impotent powerless

unsound undependable ill-founded illogical irrational unreliable flawed questionable shaky unfounded unsubstantiated unsupported disreputable groundless invalid unjustified nonrational unreasoned nonvalid unreasonable unproven nonsensical baseless uninformed spurious fallacious inadequate untrustworthy erroneous specious foundationless gratuitous unwarranted illegitimate weak misguided unjustifiable unconvincing without basis without foundation without cause without justification without reason unacceptable unreasoning faulty reasonless unfair sophistic preposterous Unsupported incoherent inconsequential untrue sham risky bogus unrecognized unrealistic wrong false inconsequent imaginary causeless illusory uncorroborated uncalled-for uncalled for without explanation not backed up unrecognised dishonest unrespected flighty capricious insubstantial erratic dishonorable dodgy irresponsible not trustworthy dishonourable wide of the mark

undependable unreliable unsafe erratic inferior substandard unacceptable unsatisfactory unsound unstable awful cheap cheapo defective low-grade low-quality second-rate

unreliable dodgy inferior irresponsible mediocre poor shoddy undependable untrustworthy rubbish second rate dubious dishonest questionable unstable unsafe flimsy suspect not dependable untried insincere unproven suspicious uncertain fishy novel experimental disreputable shady dishonourable reckless shifty guileful unassured unsure deceptive unscrupulous iffy erratic specious shonky capricious flighty fallacious unprincipled weak erroneous duplicitous untrusty not trustworthy not conscientious not to be trusted not to be depended on dishonorable

despicable bad contemptible deplorable dishonorable dishonourable disgraceful evil wicked heinous immoral horrifying irresponsible reprehensible appalling low lowly offensive ignoble indecent disreputable villainous wrong horrible infamous pathetic unconscionable corrupt crooked dishonest hateful horrid ignominious obnoxious unjust caitiff detestable nasty shameful unprincipled dreadful unethical unrighteous unscrupulous vile abhorrent abject awful base deceptive devious disgusting loathsome repulsive rotten abominable black cutthroat degrading dirty discreditable filthy mean odious repugnant untrustworthy execrable pitiful sinful sorry worthless evil-minded low-down low-minded repellent scurvy depraved decadent dissolute debauched reprobate degenerate lewd dissipated licentious unclean miscreant impure vicious profligate nefarious perverted unworthy wanton shady unsavoury shameless unreliable unsavory fraudulent retrograde sordid libidinous promiscuous debased sick retrogressive libertine degenerated decayed vitiated degraded lascivious amoral rakehell corrupted useless lecherous perverse atrocious unrespected terrible shocking objectionable unforgivable opprobrious indefensible poor undeserving unspeakable unrespectable egregious inglorious scandalous dubious valueless demeaning no-good blameworthy exceptionable intolerable flagitious inexcusable criminal dastardly diabolical knavish outrageous humiliating louche embarrassing unlawful obscene iniquitous dark unvirtuous unchaste dodgy graceless wrongful morally wrong

unfortified

short-lived ephemeral fleeting passing transient ceasing ending impermanent momentary temporary transitory

debatable doubtful dubious inconclusive uncertain unfounded unproven unsound disputable imperfect indefinite questionable refutable tenuous unsure vague controvertible arguable problematical doubtable problematic negotiable answerable moot contradictable ambiguous fallible unreliable unclear erring faulty mistaken inaccurate error-prone undependable defective faultful obscure suspect unprovable dodgy cryptic suspicious apocryphal flimsy disreputable oracular incoherent spurious disputed dubitable shady untenable unconvincing iffy controversial unverified contentious

disloyal treacherous subversive traitorous deceitful seditious unfaithful treasonable betraying double-crossing double-dealing duplicitous faithless false perfidious recreant two-faced two-timing unpatriotic untrue untrustworthy fickle unreliable undependable inconstant uncertain unstable irresolute unsettled unpredictable questionable weak dishonest wavering iffy unfixed capricious dubious unsteady changeable dodgy irresponsible inconsistent fluctuating mercurial changing varying undecided flexible volatile variable insecure erratic doubtful doubting unloyal indefinite vacillating changeful trustless fluid untrusty shifty lying untruthful irregular different half-hearted uncommitted sneaky slippery speculative ambiguous unsure unconfirmed immature uneven deviating wobbly disaffected adulterous arbitrary indecisive moving loose unethical misleading soft pliable yielding afraid willing pliant unconvincing skittish unbelieving false-hearted infrequent intermittent nonuniform fallible unrealistic disobedient cool disliking negligent fraudulent careless unscrupulous cold unequal inconclusive equivocal unknown flawed error-prone errant errable fleeting flimsy unsound unsecure self-doubting self-distrustful diffident contradictory fake dicey hairy unresolved undetermined unforeseeable paradoxical discrepant unconfident pseudo dishonorable sporadic labile discordant bad flakey incongruent indeterminate unsafe sketchy vulnerable vagarious fluctuant suspect makeshift not dependable not trustworthy incongruous shifting dishonourable flaky flickery impulsive airy-fairy flighty vague feared hesitant dismayed distrustful doubted confused fearful ever-changing up and down excited upset excitable broken discontinuous friendly imbalanced in two minds agitated

excitable fiery hotheaded impetuous rash

fragile crumbling decaying precarious decrepit unsound weak compromised deteriorated rickety breakable delicate inadequate ruined vulnerable dilapidated frail iffy tumbledown unreliable unsteady fracturable shabby unstable worn deteriorating feeble insubstantial rundown shaky weakly destructible dodgy flimsy bedraggled derelict friable battered decayed quavering uncertain brittle creaky frangible insecure antiquated crumbly haggard shatterable wispy broken-down easily broken easily destroyed falling apart in disrepair in ruins run down run-down weather-beaten worn out worn-out falling to pieces worse for wear in a state of disrepair on its last legs shattery impermanent perishable temporary unsturdy ephemeral poorly made irresponsible transitory undependable

worthless terrible unworthy bad insignificant empty futile inconsequential ineffectual atrocious barren bogus counterproductive dreadful execrable hollow horrible inferior inutile lousy meaningless mediocre miserable nugatory paltry pathetic pointless poor profitless trifling trivial unimportant unproductive unprofitable unusable useless valueless wasted awful horrendous horrid rotten unavailing unessential wretched low-grade middling rubbish second-class second-rate substandard trashy unsatisfactory

disreputable untrustworthy cowboy unreliable common fly-by-night notorious obscure ordinary shady unimportant unknown unrespected

neurotic paranoid panicky nervous anxious manic obsessive overanxious overwrought irrational jumpy oversensitive phobic hysterical nervy twitchy stressy erratic fearful hysteric obsessed compulsive disturbed fixated tense unstable highly strung hyper

vague inconclusive inadequate unsatisfactory groundless questionable ambiguous deficient incomplete insufficient unconvincing unfounded contestable disputable unfinished unsatisfying academic academical answerable arguable contradictable controversial controvertible debatable debated disputed doubtable equivocal hypothetical iffy indeterminate invalid lacking moot negotiable problematic problematical refutable speculative theoretic theoretical indecisive uneventful

untenable indefensible insupportable unjustifiable unsustainable irrational unbelievable unreasonable illogical unjustified fallacious invalid senseless unsound implausible preposterous absurd groundless unfounded weak faulty flawed specious unsupportable undefendable refutable injudicious nonrational foolish careless baseless defective flimsy unreasoning nonsensical irresponsible ignorant unreasoned inadmissible shaky incoherent silly ridiculous unscientific ill-founded unproved spurious questionable unconnected hollow contradictory inane ludicrous fatuous erroneous unwise insane incongruous irrelevant unrealistic sophistical unsubstantial idiotic illegitimate daft irreconcilable crazy impossible stupid inconsequential nutty inconclusive wacky casuistic imbecilic mad sophistic false inconsequent self-contradictory off beam off the wall

dishonest corrupt unreliable undependable untrustworthy disreputable insincere perfidious unprincipled unscrupulous crooked deceitful deceiving deceptive fraudulent mendacious sinister treacherous untruthful cheating cunning guileful misleading swindling traitorous tricky villainous wily bluffing false hoodwinking lying recreant shady shifty sneaky underhanded unfair backbiting double-crossing double-dealing two-faced two-timing devious hypocritical incorrect imprecise inexact

fabricated imprecise inaccurate erroneous exaggerated fallacious inexact wrong fake false inauthentic incorrect off unfaithful unreliable untrue untruthful contrived feigned fictional fictitious invented loose corrupt corrupted misleading fraudulent hypothetical made-up spurious not accurate not exact off target wide of the mark faulty improper specious invalid flawed apocryphal mock unfounded bogus truthless questionable unsound fanciful counterfactual concocted mistaken illogical insincere distorted unauthentic unreal fishy iffy forged colored manufactured coloured imaginary imperfect defective unsuitable biased unfitting

loose flexible lenient liberal lax relaxed inexact heedless tolerant unrestricted unrigorous unsecured undetailed unmeticulous unrestrained nonspecific permissive indifferent inexplicit generic imprecise inaccurate non-restrictive

unbalanced agitated anxious flustered discomposed disorganised disorganized unhinged irrational neurotic troubled unsound bothered distressed disturbed jittery jumpy nervous perturbed restless skittish tense uneasy unglued unsettled unstrung upset uptight imbalanced unstable worried high-strung

fake bogus counterfeit false phoney pseudo spurious phony sham mock supposititious unauthentic artificial fraudulent imitation dubious illegitimate ingenuine factitious questionable feigned imitative ersatz inauthentic pretentious pirated unreal knock-off forged deceptive untrustworthy dishonest dishonorable unacceptable invalid bad disagreeable detestable pretend unnatural synthetic dishonourable

unconvincing unimpressive unpersuasive weak feeble unsuccessful vain implausible inconclusive ineffective dubious inadequate shallow specious fanciful unconceivable unlikely incredible ineffectual poor unbelievable doubtful flimsy unthinkable lame unrealistic incredulous questionable trifling thin uncompelling unsound improbable inconceivable suspect fantastical indecisive unimaginable unsatisfactory beyond belief far-fetched not convincing not credible scarcely credible difficult to believe hard to believe unacceptable unplausible fabulous cock-and-bull unbelieveable unreliable unreasonable

immature adolescent juvenile childlike unsophisticated childish

avoidable preventable evadable evitable escapable avertible avertable correctable stoppable

vulnerable fragile infirm unstable rickety broken exposed flimsy insecure loose moving unsound wobbly decrepit defenceless defenseless flexible helpless makeshift undependable unfixed unsafe wavering weakened yielding accessible assailable delicate flaccid floppy indefensible limp untenable vincible wide-open rocky tender unguarded unprotected breakable brittle creaky crumbling dainty easily broken fine frangible old poorly made quavering shabby shaking tottering tottery transitory unbalanced unsteady unsturdy wabbly rotten unsecure

fallacious inaccurate invalid nonauthentic erroneous fallible false nonlegitimate falsified faulty flawed incorrect misguided untrustworthy wrong misinformed untrue delusive delusory inexact misleading questionable undependable unreliable deceptive disreputable doubtful flimsy imprecise shaky specious spurious suspect unsubstantiated unsupported dodgy dubious flaky flakey iffy uncertain weak ill-founded rocky sophistic touch-and-go

amateur clumsy incapable ineffective powerless talentless unskillful untalented useless weak awkward improper inaccurate ineffectual inefficient inept terrible unable unacceptable ungifted unpolished unprepared unqualified unskilled unsuitable amateurish artless beginning crude faulty green heavy-handed ignorant inexact inexperienced inexpert jackleg new off primitive raw rough rude unfitted unprofessional unreliable unschooled unseasoned untaught untested untrained untried untutored would-be bad detestable disagreeable evil fake forged immoral inadequate incompetent inconsequential inconsiderable mean misbehaving noxious rotten sinful tainted unpleasant unreal unvirtuous vicious wicked graceless

slapdash careless casual erring indolent lazy undetailed unreliable

unflyable

surprising unexpected unforeseen unlikely unpredictable improbable out of the blue perplexing astonishing aberrant uncommon rare unusual untypical abnormal uncharacteristic unfamiliar bizarre abrupt unanticipated anomalous odd strange extraordinary atypical startling peculiar aberrational unrepresentative aberrated stunning impulsive non-typical sudden anomalistic impetuous staggering unheralded unpredicted from left field

uncharacteristic unexpected uncommon startling surprising unusual unrepresentative out of character out of keeping

broken distant dysfunctional fragile troubled unstable weak feeble loveless volatile insecure unsteady cold shaky aloof temperamental estranged rocky inconstant unbalanced defective unsettled frail unhealthy deteriorated insubstantial vulnerable hostile violent wavering

late tardy belated behind delayed overdue behindhand early unpunctual

chicken chickenhearted chicken-livered coward cowardly craven dastardly fainthearted fearful gutless lily-livered milk-livered nerveless poltroon poor-spirited pusillanimous spineless spiritless timorous uncourageous ungallant unheroic unreliable weakhearted yellow disloyal feeble frail infirm namby-pamby puny shilpit sickly unfaithful weak afraid flimsy meek quiet reticent retiring shy soft timid uncommitted undependable vulnerable yielding

affected

greatly upsetting great man great Monday greatness greatnesses great news greatly increasing greatly increased greatly enjoys greatly enjoying greatly enjoyed greatly enamoured of