abstract, abstruse, ambiguous, blear, bleary, blurry, chancy, choppy, dicey, diffuse, diffused, dim, doubtful, dubious, erratic, faint, foggy, groggy, hazy,
iffy, inarticulate, indecisive, indefinite, indescribable, indistinct, inexplicit, insecure, nonpayer, nonplussed, nonsolid, oblique, obscure, parlous, precarious, questionable, shaky, slippery, tentative, tottery, uncertain, unclear, unreliable, unsafe, unsettled, unsteady, unsure, untrustworthy, vague, vaguest, wishy-washy