plausible

plausible, preposterous, absurd, ludicrous, improbable, laughable, illogical, fanciful, farfetched, incomprehensible, outlandish, believable, ridiculous, risible, bizarre, inconceivable, nonsensical, disingenuous, irrelevant, specious, unconvincing, farcical, counterintuitive, unrealistic, fallacious, incongruous, banal, insubstantial, fatuous, untrue, exaggerated, baffling, trite, unpersuasive, meaningless, contradictory, dubious, non sequitur, perverse, convoluted, illusory, unsubstantiated, unprovable, superfluous, otiose, unsupportable, outrageous, impossible, comical, unexceptional, unsatisfying, spurious, unfeasible, chimerical, pollyannaish, insane, tendentious, fantastical, surreal, hyperbolic, unreal, simplistic, unoriginal, perplexing, silly, pointless, amusing, nutty, cliched, melodramatic, unsurprising, unlikely, unfathomable, unremarkable, unfounded, wishful, unproblematic, irrational, unsettling, untenable, harebrained, overdetermined, explicable, uninteresting, inconsequential, hackneyed, overblown, undramatic, refutable, wishful thinking, disconcerting, unforthcoming, delusional, vacuous, inexplicable, conjectural, guessable, coincidental, disprovable, falsifiable, amateurish, grotesque, feasible, arbitrary, conceivable, impatient, inconsistent, patronizing, suspect, tolerable, admissible, ancient, annoying, anybody, anyone, articulate, be, conflicting, convincing, degraded, tenable, oversimplified, erroneous, debatable, essentialist, fetched

cock-and-bull story, fairytale, fairy story, fairy tale, song and dance

unbelievable