Byzantine Daedalian Herculean abstruse amalgamated ambiguous ambivalent amphibious anfractuous arduous baffling balled up bewildering beyond one blended bothering brutal combined complex complicated composite compound compounded confounded confounding confused confusing conglomerate convoluted crabbed cramp critical daedal dappled dedal delicate demanding devious difficile difficult discomposing disconcerting dismaying distracting disturbing eclectic elaborate embarrassing embrangled enigmatic entangled equivocal exacting fancy fifty-fifty formidable fouled up garbled gordian hairy half-and-half hard hard to understand hard-earned hard-fought heterogeneous implicated indiscriminate involuted involved ironic jawbreaking jumbled knotted knotty laborious labyrinthian labyrinthine loused up many-faceted many-sided matted mazy mean meandering medley messed up mingled miscellaneous mixed mixed up motley mucked up multifaceted multifarious multinational multiracial mysterious mystifying no picnic not easy obfuscated obscure obscured operose ornate overtechnical patchy perplexed perplexing perturbing pluralistic problematic promiscuous puzzling ramified rigorous rococo rough roundabout rugged scrambled screwed up set with thorns severe sinuous snarled sophisticated spiny steep strenuous subtle syncretic tangled tangly thorny thrown together ticklish toilsome tortuous tough tricky twisted uphill upsetting varied wicked winding