Gordian knot Synonyms

complicated situation worry trouble snarl snag roun quandary quagmire puzzle problem predicament koan toughie complex problem difficult situation tight spot nodus hot water hard nut to crack facer brainteaser catch-22 can of worms poser plight pickle crux conundrum concern complication complexity chaos challenge catch case bewilderment difficulty dilemma muddle mess knot jam issue hitch headache fix entanglement enigma affair