consider speculate hypothesize should might hope putative propose indication possible possibly know presume implicate like investigate hypothesise either speculation prediction potent plausible likely expect happen appear for tend favor suspect probably viable elucidate possibility reason hypothesis estimate likelihood obscure unproven certainty postulate feasible preferentially suggestion argue or presumably unclear feel open would hypothetically unknown support question indicate assumption hypothetical proposal assign apparent idea hypothesised believe conceivable must uncertain whether imply suggestive suppose can favore indicated predict unlikely seem apparently if perhaps suggest potential potentially test infer conclusion may probable putatively elusive assume clear think thought notion