enigmatic

obscure, dark, vague, enigmatic, cryptic, ambiguous, equivocal mean not clearly understandable. obscure implies a hiding or veiling of meaning through some inadequacy of expression or withholding of full knowledge <obscure poems>. dark implies an imperfect or clouded revelation often with ominous or sinister suggestion <muttered dark hints of revenge>. vague implies a lack of clear formulation due to inadequate conception or consideration <a vague sense of obligation>. enigmatic stresses a puzzling, mystifying quality <enigmatic occult writings>. cryptic implies a purposely concealed meaning <cryptic hints of hidden treasure>. ambiguous applies to language capable of more than one interpretation <an ambiguous directive>. equivocal applies to language left open to differing interpretations with the intention of deceiving or evading <moral precepts with equivocal phrasing>.