Conjectural /(?)/

Con·jec·tur·al

Conjectural

a.
  1. Dependent on conjecture; fancied; imagined; guessed at; undetermined; doubtful.
    And mak'st conjectural fears to come into me.
    A slight expense of conjectural analogy.
    — Hugh Miller.
    Who or what such editor may be, must remain conjectural.