convoluted in WordNet English dictionary

1. highly complex or intricate and occasionally devious
   "the Byzantine tax structure"; "Byzantine methods for holding on to his chairmanship"; "convoluted legal language"; "convoluted reasoning"; "the plot was too involved"; "a knotty problem"; "got his way by labyrinthine maneuvering"; "Oh, what a tangled web we weave"- Sir Walter Scott; "tortuous legal procedures"; "tortuous negotiations lasting for months"
   Byzantine  convoluted  involved  knotty  tangled  tortuous 
   
2. rolled longitudinally upon itself
   "a convolute petal"
   convolute  convoluted