All zero hour synonyms
ze·ro hour
Z z noun zero hour
- deadline — A deadline is a time or date before which a particular task must be finished or a particular thing must be done.
- juncture — a point of time, especially one made critical or important by a concurrence of circumstances: At this juncture, we must decide whether to stay or to walk out.
- demandingness — the quality of being demanding
- flash point — Also, flashing point. Physical Chemistry. the lowest temperature at which a liquid in a specified apparatus will give off sufficient vapor to ignite momentarily on application of a flame.
- meltdown — network meltdown
- needfulness — The property of being needful or necessary.
- critical mass — In physics, the critical mass of a substance is the minimum amount of it that is needed for a nuclear chain reaction.
- exigence — Exigency.
- critical period — a period in a lifetime during which a specific stage of development usually occurs. If it fails to do so, it cannot readily occur afterwards
- h-hour — the time, usually unspecified, set for the beginning of a planned attack.
- exigency — An urgent need or demand.
- appointment — The appointment of a person to a particular job is the choice of that person to do it.
- cutoff — A cutoff or a cutoff point is the level or limit at which you decide that something should stop happening.
- criticalness — inclined to find fault or to judge with severity, often too readily.
- emergency — A serious, unexpected, and often dangerous situation requiring immediate action.
- imperativeness — absolutely necessary or required; unavoidable: It is imperative that we leave.
- choke point — a place of greatest congestion and often hazard; bottleneck.
- contingency — A contingency is something that might happen in the future.
- d-day — You can use D-day to refer to the day that is chosen for the beginning of an important activity.