及物动词

1. 失信于；辜负
If you betray someone who loves or trusts you, your actions hurt and disappoint them.

1. give away information about somebody

e.g. He told on his classmate who had cheated on the exam

Synonym: denouncetell ongive awayratgrassshitshopsnitchstag

2. cause someone to believe an untruth

e.g. The insurance company deceived me when they told me they were covering my house

Synonym: deceivelead astray

3. reveal unintentionally

e.g. Her smile betrayed her true feelings

Synonym: bewray

4. disappoint, prove undependable to
abandon, forsake

e.g. His sense of smell failed him this time
His strength finally failed him
His children failed him in the crisis

Synonym: fail

5. deliver to an enemy by treachery

e.g. Judas sold Jesus
The spy betrayed his country

Synonym: sell

6. be sexually unfaithful to one's partner in marriage

e.g. She cheats on her husband
Might her husband be wandering?

Synonym: cheat oncheatcuckoldwander