implausible
Stretches the imagination
Implausible describes something that seems unlikely to be true or to happen—not quite impossible, but hard to believe: The alibi was implausible.
An implausible explanation strains credulity without outright defying logic.
The word suggests skepticism rather than outright rejection: The plot twist felt implausible but entertaining.
Completely contrary to reason
- absurdWildly illogical
- ludicrousAbsurdly unreasonable or inappropriate
- ridiculousInviting scorn through absurdity
- outlandishStrikingly weird or foreign-seeming
fantastical · fanciful · unrealistic · inconceivable · unbelievable · outrageous · bizarre · incredible
Not apt to happen
- remoteDistant or controller
- far-fetchedUnconvincingly unlikely or strained
- doubtfulUncertain of truth
- questionableOf uncertain validity
slim · outside chance · against the odds · hard to believe · stretch · tall tale · dubious · suspect
Lacking sound judgment
- unreasonableNot guided by reason
- fallaciousContaining faulty reasoning
- speciousSuperficially plausible but flawed
- flawedHaving faults or imperfections
contradictory · inconsistent · incoherent · nonsensical · untenable · faulty · unsound · invalid
Of uncertain validity
- suspectBelieve to be likely
- doubtfulUncertain of truth
- skepticalInclined to question claims
- suspiciousInclined to distrust
fishy · shady · unconvincing · untrustworthy · uncertain · iffy · debatable · disputable
Lacking factual support
- groundlessLacking factual support
- unsubstantiatedWithout supporting evidence
- unsupportedLacking backing or proof
- unjustifiedLacking adequate reason
unwarranted · fabricated · invented · concocted · made-up · spurious · false · untrue
preposterous
Completely contrary to reason
- absurdWildly illogical
- ludicrousAbsurdly unreasonable or inappropriate
- ridiculousInviting scorn through absurdity
outlandish · fantastical · fanciful · unrealistic · inconceivable · unbelievable · outrageous · bizarre · incredible · exaggerated
unlikely
Not apt to happen
- remoteDistant or controller
- far-fetchedUnconvincingly unlikely or strained
- doubtfulUncertain of truth
questionable · slim · outside chance · against the odds · hard to believe · stretch · tall tale · dubious · suspect · unforeseeable
irrational
Lacking sound judgment
- unreasonableNot guided by reason
- fallaciousContaining faulty reasoning
- speciousSuperficially plausible but flawed
flawed · contradictory · inconsistent · incoherent · nonsensical · untenable · faulty · unsound · invalid · paradoxical
questionable
Of uncertain validity
suspicious · fishy · shady · unconvincing · untrustworthy · uncertain · iffy · debatable · disputable · unreliable
baseless
Lacking factual support
- groundlessLacking factual support
- unsubstantiatedWithout supporting evidence
- unsupportedLacking backing or proof
unjustified · unwarranted · fabricated · invented · concocted · made-up · spurious · false · untrue · erroneous
- authenticityauthentic, genuine, real, fake, counterfeit
- Unlikelyunlikely, improbable, doubtful, dubious, remote
- unbelievableunbelievable, incredible, inconceivable, unthinkable, unimaginable
- idealisticidealist, idealistic, utopian, quixotic, dreamer
- negativesno, not, never, none, nothing
implausibleplausible
Appearing worthy of belief
believable · credible · convincing · creditable · reasonable
implausiblelikely
Having good odds
probable · possible · feasible · conceivable · imaginable