peradventure -- (doubt or uncertainty as to whether something is the case; "this proves beyond peradventure that he is innocent")
Overview of adv peradventure
The adv peradventure has 1 sense
possibly, perchance, perhaps, maybe, mayhap, peradventure -- (by chance; "perhaps she will call tomorrow"; "we may possibly run into them at the concert"; "it may peradventure be thought that there never was such a time")