(a.) Alt. of Problematical.

a bit thick a bit thin absurd ambiguous arguable at issue baffling bewildering beyond belief bothering confounding confusing confutable conjectural contestable controversial controvertible debatable deniable difficult discomposing disconcerting dismaying disputable disputed distracting disturbing doubtable doubted doubtful dubious dubitable embarrassing enigmatic hairy hard of belief hard to believe iffy implausible in dispute in doubt in dubio in question inconceivable incredible indecisive intricate mistakable moot mysterious mystifying not deserving belief open open to doubt open to question open to suspicion passing belief perplexing perturbing precarious preposterous problematical puzzling questionable questioned refutable ridiculous sensitive speculative staggering belief suppositional suspect suspicious tall thick thin touchy tricky unbelievable uncertain unconvincing undecided unearthly ungodly unimaginable unsettled unthinkable unworthy of belief upsetting