- zero hour as a noun:
- 1
zero hour
noun
1 zero hour
The time set for the start of an action or operation.
Moby thesaurus: A-day, D day, H hour, charged moment, contingency, crisis, critical moment, crossroads, crucial moment, deadline, decisive moment, eleventh hour, emergency, exigency, kairos, kairotic moment, moment of truth, nick of time, pass, pinch ... show more.
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