betrayal

noun

be·​tray·​al bi-ˈtrā(-ə)l 

bē-

plural betrayals

1

: the act of betraying someone or something or the fact of being betrayed : violation of a person's trust or confidence, of a moral standard, etc.

the betrayal of a friend

a betrayal of trust

a betrayal of one's principles

A man who built his entire administration upon demanding unctuous loyalty from his allies now finds himself wounded by their shabby betrayal.

—Jack Hitt

The double life of an informant is a peculiar one, filled at the same time with tedium and betrayal.

—Karen Richardson

Even Jesus recognized that there was something paradoxical about his betrayal by Judas Iscariot—in three of the four canonical Gospels, with a kiss.

—David Gates

2

: revelation of something hidden or secret

a betrayal of one's true feelings

There was never doubt, never a betrayal of indecision.

—Jack London

… she had shrunk with irresistible dread from every course that could tend towards a betrayal of her miserable secret.

—George Eliot

Synonyms of betrayal

• treachery
• treason

Examples of betrayal in a Sentence

the terrible betrayal of having her best friend reveal her confidences to others

Recent Examples on the Web

A lot of people will watch it and see it as a betrayal. — Sean T. Collins, Vulture, 22 June 2026

The story is set in Miami’s most exclusive neighborhood, where a picture-perfect wife uncovers her husband’s double life – igniting a seductive power game that turns betrayal into the most intoxicating game of her life. — Justin Kroll, Deadline, 18 June 2026

Figo famously made the ultimate betrayal in 2000 when Perez became Real Madrid president for the first time. — Tom Sanderson, Forbes.com, 18 June 2026

His jealousy provokes an act of betrayal and cruelty. — Stephanie Zacharek, Time, 18 June 2026

Word History

First Known Use

1788, in the meaning defined at sense 1

Phrases Containing betrayal

• self-betrayal

Rhymes for betrayal

• portrayal