- a knotty problem.
- Byzantine methods for holding on to his chairmanship.
- Byzantine monks.
- Byzantine rites.
- convoluted legal language.
- convoluted reasoning.
- got his way by labyrinthine maneuvering.
- Oh, what a tangled web we weave.
- the Byzantine tax structure.
- the plot was too involved.
- tortuous legal procedures.
- tortuous negotiations lasting for months.