free as wind (adjective) free and easy: relaxed
Sinonime: apparently, as likely as not, as the case may be, assumably, believably, dollars to doughnuts, doubtless, expediently, feasibly, imaginably, in all likelihood, in all probability, like enough,
maybe, most likely, no doubt, one can assume, perchance,
perhaps, plausibly, possibly, practicably, presumably, presumptively, reasonably, seemingly, to all appearances
Antonime: improbably, unlikely