Byzantine, acerb, acerbate, acerbic, acescent, anile, balled up, bearish, beyond one, bitchy, blunt, brusque, cankered, cantankerous, choleric, churlish, complex, complicated, confounded, confused, convoluted, crab, cramp, cranky, cross, cross-grained, crusty, cussed, daedal, debilitated, decrepit, devious, difficult, disagreeable, doddered, doddering, doddery, dour, dry, elaborate, embrangled, entangled, excitable, feeble, feisty, fossilized, fouled up, fractious, garbled, gerontal, gerontic, gloomy, glum, green, gruff, hard, hard to understand, huffish, huffy, implicated, infirm, intricate, involuted, involved, irascible, irritable, jumbled, knotted, knotty, labyrinthian, labyrinthine, loused up, many-faceted, matted, mazy, mean, meandering, messed up, mixed up, morose, mossbacked, moth-eaten, mucked up, multifarious, mummylike, obfuscated, obscure, obscured, ornery, overtechnical, palsied, papery-skinned, perplexed, perverse, pickled, pungent, ramified, ravaged with age, rickety, roundabout, run to seed, rusty, saturnine, scrambled, screwed up, sec, senile, shaky, shriveled, snappish, snarled, sour, sour as vinegar, soured, sourish, spiteful, spleeny, splenetic, stricken in years, subtle, sulky, surly, tangled, tangly, tart, tartish, testy, timeworn, tottering, tottery, tough, twisted, ugly, unripe, unsweet, unsweetened, vinegarish, vinegary, waspish, weak, withered, wizened