(of evidence) based on details that suggest something strongly but do not provide direct proof

incidental

of, based on, a hypothesis (and not proved)

guessed, assumed

generally considered to be

commonly believed

generally considered or reported (to be); generally considered to be (but with some doubt)

believed

a form of medicine in a container (to be) put into the rectum or vagina

believed

made or done as a trial, to test the effect

conditional, experimental

based on theory, not on practice or experience; not tested yet

hypothetical

not reliable; not certainly knowing or known

doubtful, changeable