more believable

authentic conceivable convincing credible persuasive plausible reasonable satisfying

aboveboard acceptable colorable credential creditable fiduciary honest-to-god imaginable impressive likely possible presumable presumptive probable rational reliable straight supposable tenable tried trusty unquestionable up front

implausible improbable inconceivable incredible unbelievable unimaginable unlikely unreasonable

unbelieveable unconvincing unreliable unthinkable