Definitions

D-day

[dee-dey] / ˈdiˌdeɪ /

NOUN

target date

Synonyms

WEAK

A-day H-hour deadline target day term terminal date time allotment time frame zero hour

NOUN

zero hour

Synonyms

WEAK

A-day H-hour appointed hour climax contingency countdown crisis crisis point crossroad crossroads crunch time deadline emergency exigency jumping-off point juncture moment of truth pinch pivotal moment start time strait target target day the time turning point vital moment

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Eisenhower, in particular, felt the magnitude of D-day.

From Los Angeles Times • May 29, 2026

Stagg was not allowed to make phone calls to her because of the secrecy surrounding D-day.

From Los Angeles Times • May 29, 2026

After Stagg convinces the leaders to postpone D-day, he is vindicated by a deluge of rain that arrives while everyone is attending church at Southwark House on June 5.

From Los Angeles Times • May 29, 2026

Brendan Fraser and Andrew Scott are fire and ice in this depiction of the run-up to D-day, a secret operation that required total commitment — and no rain.

From Los Angeles Times • May 29, 2026

Then, in August 2009, the city decided to pardon the children who had participated in the 1963 D-day and Double D-day protest.

From "While the World Watched: A Birmingham Bombing Survivor Comes of Age during the Civil Rights Movement" by Carolyn Maull McKinstry

D-day

Example Sentences

Related Words