betray (someone's) confidence

Translations
предать (чьё-то) доверие
She felt hurt when he betrayed her confidence.
Она почувствовала боль, когда он предал её доверие.
Definitions
To disclose or reveal private or sensitive information that someone has entrusted to you, thereby violating their trust and confidence.
Words
betray

verb
предавать
someone

pronoun
кого-либо
is

functional word
есть
confidence

noun
доверие