like enough

conceivable credible logical persuasive possible probable tenable valid

creditable likely presumable smooth sound supposable very likely

impossible improbable inconceivable irrational unbelievable unimaginable unlikely unreasonable untenable

implausible

apparently doubtless no doubt perhaps possibly presumably seemingly

believably plausibly

as likely as not as the case may be assumably dollars to doughnuts expediently feasibly imaginably in all likelihood in all probability maybe most likely one can assume perchance practicably presumptively reasonably to all appearances

improbably uncertain unlikely