Meaning & use
betrayal
The act of being disloyal to someone who trusted you, especially by breaking a promise or revealing a secret.
See it in a sentence
Sharing her private diary with classmates felt like the ultimate betrayal to her.
The film explores the betrayal of a soldier by his closest friend.
A note on using this word
Betrayal specifically requires an existing relationship of trust; simply disappointing someone is not usually called betrayal.
Words with a similar meaning
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Words with an opposite meaning
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