The Oxford Thesaurus An A-Z Dictionary of Synonyms - vague adj.

1) indefinite, indistinct, imprecise, inexact, unclear, confused, unspecified or non-specified, general, generalized, unspecific or non-specific, inexplicit or unexplicit, ill-defined, hazy, fuzzy, ambiguous, obscure, amorphous; shapeless, blurred, blurry, filmy, dim, shadowy, veiled, bleary, foggy, misty, cloudy, clouded, hardly or barely distinguishable or discernible: I have only a vague recollection of our having met. She must have had a vague idea of your intentions. Leon could almost make out the vague shape of an approaching figure. 2 undetermined, indeterminate, unfixed, indefinite, inexact, unspecified or non-specified, unspecific or non-specific, ambiguous, doubtful, in doubt, uncertain, equivocal, ambiguous: For security reasons, her time of arrival was left vague. 3) veiled, concealed, hidden, shrouded, obscure, ill-defined, unspecific or non-specific, inexplicit or unexplicit, ambiguous: There had been a vague threat of kidnapping, which should not have been ignored. 4) subliminal, subconscious, indefinable, unexplained: I had a vague sensation of being followed. 5) indefinite, ambiguous, wishy-washy, undecided, indecisive, irresolute, vacillating, wavering, inconstant, unsettled, uncertain, nebulous, up in the air: Leonore is vague about her plans to run for re-election. 6) vacant, empty, blank, expressionless, empty, vacuous, dull; puzzled: By their vague expressions I could see they hadn't understood a word.