complex Synonyms

complicated involved intricate composite byzantine compound tricky tough labyrinthine hard thorny convoluted tangled system fixation sophisticated elaborate network difficult knotty obsession problematic preoccupation problematize profound multiple multiplex multilateral multiform rough rococo multifold repetend recondite raveled ramified puzzling mystifying paradoxical operose parasynthetic parathetic multifarious perplexed perplexing plant plicated polygonal polysyllabic obscure