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View synonyms for zero hour

zero hour

noun

  1. the time set for the beginning of a military attack or operation.
  2. the time set for the beginning of any event or action.
  3. a decisive or critical time.


zero hour

noun

  1. military the time set for the start of an attack or the initial stage of an operation
  2. informal.
    a critical time, esp at the commencement of an action


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Word History and Origins

Origin of zero hour1

First recorded in 1915–20

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Example Sentences

Weeks later, in early September, the locals were still waiting for “zero hour,” the retaliation they knew was coming.

In a television season that has given us dreck like Zero Hour, Mob Doctor, and Do No Harm, Southland should be a hit.

ABC tries to get back in the ‘Lost’ game with the ridiculous ‘Zero Hour.’

And, yes, there have been and will be far worse shows than Zero Hour that make it onto the air.

I dozed off twice while watching Zero Hour and kept having to rewind to the beginning to this tepid and snooze-inducing pilot.

Around him, he could feel a tenseness creep over his men as the zero hour approached.

When the zero hour arrives, a soldier must have a clear head, his body must be fit, he must have his nerves under control.

But Milton's calm voice came across the room to them: "Zero hour," he said, stepping up into the big transmitting chamber.

The attack, preceded by a brief artillery preparation, was to take place at dawn, the “zero hour” selected.

Then, sinking down in the snow behind the black bulk of a spruce tree, they awaited the zero hour.

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