point of no return Synonyms

rubicon climacteric pivotal point decisive point big change damascus road end date critical situation tipping point critical stage decision time irreversible momentum loaded moment decisive hour key moment big crisis brink of no return crunch point dramatic shift PNR zero hour event horizon climax crisis crunch crux culmination singularity threshold watershed turning point critical point crossroads road to Damascus due date moment of truth break point crunch time defining moment PONR