simple past tense and past participle of convolute
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"
"tortuous legal procedures"
"tortuous negotiations lasting for months"
Having numerous overlapping coils or folds; convolute.
The word comes from the Latin verb convolutus, meaning "rolled up." It entered English through the French form convoluter.