Greek to one, agnostic, amalgamated, ambivalent, amphibious, amphibolic, amphibological, amphibolous, antinomic, beyond understanding, blended, capricious, chancy, changeable, combined, complex, composite, compound, compounded, confusable, conglomerate, cryptic, dappled, dicey, double-faced, doubtful, doubting, dubious, eclectic, enigmatic, enigmatical, equivocal, equivocatory, erratic, fickle, fifty-fifty, fishy, foggy, half-and-half, hesitant, hesitating, heterogeneous, impenetrable, inarticulate, incalculable, incognizable, incoherent, incomprehensible, inconclusive, indecisive, indefinite, indemonstrable, indeterminate, indiscriminate, indistinct, inscrutable, intricate, ironic, irresolute, jumbled, many-sided, medley, mingled, miscellaneous, misleading, misty, mixed, motley, multifaceted, multinational, multiracial, multivocal, mysterious, numinous, obscure, opaque, oracular, oxymoronic, paradoxical, past comprehension, patchy, pluralistic, polysemantic, polysemous, problematic, promiscuous, puzzling, questionable, rambling, scrambled, self-contradictory, skeptical, suspect, syncretic, tenebrous, thrown together, touch-and-go, unaccountable, uncertain, unclear, unconfirmable, unconnected, unconvinced, undefined, undependable, undivinable, unfathomable, unforeseeable, unintelligible, unknowable, unpersuaded, unpredictable, unprovable, unreliable, unsearchable, unsettled, unsure, unverifiable, vague, variable, varied, wavering, whimsical