Synonyms to open to suspicion

absurd, Pickwickian, a bit thick, a bit thin, abnormal, amusing, anomalous, asinine, balmy, barred, beyond belief, bizarre, childish, closed-out, cockamamie, comic, contrary to reason, crazy, curious, daft, disproportionate, doubtable, doubtful, droll, dubious, dubitable, eccentric, empty, excluded, extravagant, fantastic, farcical, fatuitous, fatuous, foolish, freaked out, freaky, funny, futile, grotesque, hard of belief, hard to believe, harebrained, high-flown, hilarious, hollow, hopeless, humorous, idiotic, idle, illogical, imbecile, imbecilic, implausible, impossible, inane, incoherent, incommensurable, incommensurate, incompatible, inconceivable, incongruous, inconsequent, inconsistent, inconsonant, incredible, insane, irrational, irreconcilable, kooky, laughable, logically impossible, loony, ludicrous, mad, meaningless, monstrous, moronic, nonsensical, not deserving belief, not possible, nuts, nutty, odd, oddball, off, off the wall, open to doubt, out, out of proportion, outlandish, outrageous, outre, oxymoronic, paradoxical, passing belief, passing strange, peculiar, poppycockish