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Mayday

American  
[mey-dey] / ˈmeɪˌdeɪ /

noun

  1. the international radiotelephone distress signal, used by ships and aircraft.


Mayday British  
/ ˈmeɪˌdeɪ /

noun

  1. the international radiotelephone distress signal

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Mayday

First recorded in 1925–30; from French (venez) m'aider “(come) help me,” contraction of m(e) “me” ( see also me ( def. )) aider “to help” ( see aid ( def. ))

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.

See Examples For:

Afterward the beau monde had a few days to find new costumes for the Monday Mayday masquerade.

From The Wall Street Journal May 22, 2026

In “The Testaments,” Lucy Halliday stars as Daisy, a new Pearl Girl who is really an undercover spy for Mayday.

From Los Angeles Times Apr. 8, 2026

In late January, after Mayday countersued in a federal court in New York, that court temporarily blocked South Dakota’s actions.

From Salon Feb. 9, 2026

“In that case,” a pilot responded, “we declare emergency: Mayday. Mayday, Mayday.”

From The Wall Street Journal Dec. 21, 2025

Mayday, mayday, for pilots whose planes had been hit, and ships — was it ships too? — at sea.

From "The Handmaid's Tale" by Margaret Atwood

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