Definitions for: Betray

[v] give away information about somebody; "He told on his classmate who had cheated on the exam"
[v] cause someone to believe an untruth; "The insurance company deceived me when they told me they were covering my house"
[v] reveal unintentionally; "Her smile betrayed her true feelings"
[v] disappoint, prove undependable to; abandon, forsake; "His sense of smell failed him this time"; "His strength finally failed him"; "His children failed him in the crisis"
[v] deliver to an enemy by treachery; "Judas sold Jesus"; "The spy betrayed his country"
[v] be sexually unfaithful to one's partner in marriage; "She cheats on her husband"; "Might her husband be wandering?"

Webster (1913) Definition: Be*tray" (b[-e]*tr[=a]"), v. t. [imp. & p. p.
Betrayed (-tr[=a]d"); p. pr. & vb. n. Betraying.] [OE.
betraien, bitraien; pref. be- + OF. tra["i]r to betray, F.
trahir, fr. L. tradere. See Traitor.]
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. --Matt. xvii.

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. --T. Watts.

5. To mislead; to expose to inconvenience not foreseen to
lead into error or sin.

Genius . . . often betrays itself into great errors.
--T. Watts.

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.

Synonyms: bewray, cheat, cheat on, cuckold, deceive, denounce, fail, give away, grass, lead astray, peach, rat, sell, shit, shop, snitch, stag, tell on, wander

Antonyms: undeceive

See Also: bamboozle, befool, break, bring out, cod, cozen, deceive, delude, disappoint, disclose, discover, divulge, double cross, dupe, expose, fool, fool around, gull, hoodwink, impart, impersonate, inform, lead by the nose, lead on, let down, let on, let out, misinform, mislead, personate, play around, play false, pose, pull the wool over someone's eyes, put on, put one across, put one over, reveal, sell out, slang, snow, take in, tip off, twotime

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