Synonyms of knotty

1 Syllable
hard, tough, ter, rough
2 Syllables
pricklier, puzzling, hi-tech, gasser, thorny, mazy, complex, briery, knurled, baffling, trickiest, rugged, gordian, tricky, rougher, trickier, lassoed, knotted, unshorn, roughest, sticky, brambly, uphill, chapped, wrinkly, prickly
3 Syllables
involved, nodulous, daedalean, terrible, mystifying, perplexing, effortful, ramified, difficult, heightened, daedalian, cross-grained, nodular, unshaven
4 Syllables
intricate, formidable, complicated, echinated, involute, reticular
5 Syllables
sophisticated, many-faceted, labyrinthine, problematical, elaborate