- ambiguous: (adj) Unclear; having more than one interpretation.
- baffle: (v) To confuse.
- cogitate: (v) To think carefully about; to ponder.
- convoluted: (adj) Twisted or complicated.
- enigma: (n) A mystery; a puzzling situation.
- insoluble: (adj) Difficult or impossible to solve or explain. Incapable of being dissolved.
- intricate: (adj) Complicated, complex or difficult to understand.
- labyrinth: (n) A maze or winding network.
- quandary: (n) State of uncertainty or puzzlement.
- tactic: (n) A strategy or maneuver.