Synonyms:
- Chinese puzzle,
- Gordian knot,
- Rube Goldberg contraption,
- can of worms,
- complex,
- jungle,
- knot,
- maze,
- meander,
- mesh,
- mess,
- morass,
- perplex,
- ravel,
- skein,
- snafu,
- snake pit,
- snarl,
- tangle,
- tangled skein,
- web,
- webwork,
- wheels within wheels,
- wilderness