betray
verbUK /bɪˈtreɪ/
US /bɪˈtreɪ/
To hurt someone who trusts you by doing something wrong to them.
He felt sad when his friend betrayed his secret.
OTHER MEANINGS
2. To show a feeling you are trying to hide.
Her shaking hands betrayed how nervous she was.
3. To give away a secret or a person to an enemy.
He betrayed the hiding place to the soldiers.
4. To be unfaithful to your country or a group.
The spy betrayed his country for money.