H-hour

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The hour at which any major event planned for the future is set to begin, as used in United States military. figuratively

Synonyms

All synonyms
zero hour

Etymology

The H stands for hour; compare D-Day.

More for "h-hour"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.