1.To deliver into the hands of an enemy by treachery or fraud, in violation of trust; to give up treacherously or faithlessly; as, an officer betrayed the city. "Jesus said unto them, The Son of man shall be betrayed into the hands of men."
2.To prove faithless or treacherous to, as to a trust or one who trusts; to be false to; to deceive; as, to betray a person or a cause. "But when I rise, I shall find my legs betraying me."
3.To violate the confidence of, by disclosing a secret, or that which one is bound in honor not to make known. "Willing to serve or betray any government for hire."
4.To disclose or discover, as something which prudence would conceal; to reveal unintentionally. "Be swift to hear, but cautious of your tongue, lest you betray your ignorance."
5.To mislead; to expose to inconvenience not foreseen to lead into error or sin. "Genius... often betrays itself into great errors."
6.To lead astray, as a maiden; to seduce (as under promise of marriage) and then abandon.
7.To show or to indicate; said of what is not obvious at first, or would otherwise be concealed. "All the names in the country betray great antiquity."
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