The phrase "most last-gasp" indicates something that occurs at the very end or last possible moment. Synonyms for this phrase include "late-breaking," "final-hour," "eleventh-hour," "last-minute," "clutch," and "pressure-packed." These words emphasize the sense of urgency and intensity associated with a situation that requires immediate action. Whether a game-winning shot in basketball, a crucial vote in the Senate, or a deadline for a project, the pressure of the moment can bring out the best in people, and these synonyms capture the drama and tension of these critical moments. In short, they all describe a situation where everything hangs in the balance, and success or failure is decided in the "most last-gasp" of moments.