Unclear
Indistinct, indeterminate, hazy, fuzzy, lacking definition, blurry, murky, faint, dim, nebulous, formless, amorphous, uncertain, yet to be decided, unsettled, unestablished, unresolved, pending, in the balance, speculative, forgetfulness, dreaminess, abstraction, empty-headedness, confusion, indefinite, unclear, cloudy, misty, blurred, out of focus, foggy, shadowy, obscure, shapeless, unformed, nebulose, undecided, unsure, unknown, unconfirmed, unascertained, outstanding, up in the air, absent-mindedness, disorganization, inattention, wool-gathering, giddiness, and befuddlement.
Approximate
Imprecise, rough, inexplicit, loose, generalized, equivocal, woolly, incomplete, imperfect, cursory, unclear, unsure, puzzled, mystified, bewildered, nonplussed, irresolute, tentative, vacillating, inexact, approximate, non-specific, ill-defined, ambiguous, hazy, sketchy, inadequate, superficial, perfunctory, uncertain, undecided, baffled, bemused, confused, indecisive, hesitant, wavering, and iffy.