boiling point, breaking point, clutch, conjuncture, crisis, crossroad(s), crunch, crunch time, Dunkirk, emergency, exigency, extremity, flash point, head, juncture, tinderbox
contingency, possibilityclimax, turning pointhappening, landmark, milestonecondition, pass, situation, straitdeadlock, impasse, stalematecorner, fix, hole, hot water, jam, last ditch, pinch, predicament, scrape, spoteleventh hour, last minute
moment of truth, point of no return