Synonym: deceive, mislead, trick. Similar words: betrayal, betroth, betrothed, betrothal, tray, stray, astray, portray. Meaning: [bɪ'treɪ] 
v. 1. reveal unintentionally 2. deliver to an enemy by treachery 3. disappoint, prove undependable to; abandon, forsake 4. be sexually unfaithful to one's partner in marriage 5. give away information about somebody 6. cause someone to believe an untruth.
v. 1. reveal unintentionally 2. deliver to an enemy by treachery 3. disappoint, prove undependable to; abandon, forsake 4. be sexually unfaithful to one's partner in marriage 5. give away information about somebody 6. cause someone to believe an untruth. 
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1) Trust thyself only, and another shall not betray thee. 
2) Their betray disorganized the party.
3) He promised never to betray the organization.
4) He was offered money to betray his colleagues.
5) Betray me, I will let you have nothing.
6) I tried not to betray my ignorance.
7) She will not betray your trust .
8) Fake friends never betray in front of you. They always do it behind you.
9) When I tell someone I will not betray his confidence I keep my word.
10) I would never betray a confidence .
11) The slightest sound might betray his presence .
12) What kind of man would betray his own sister to the police?
13) They offered me money if I would betray my associates.
14) I have never known her to betray a confidence .
15) His remarks betray an utter contempt for the truth .
16) We betray the ideals of our country when we support capital punishment.
17) His remarks betray a staggering contempt for the truth .
18) They chose to die nobly rather than to betray their king.
19) Karelius hoped his face did not betray him.
20) She must not let a nervous glance betray her.
21) The other concepts betray similar logical peculiarities.
22) Aphrodite using her power chiefly to ensnare and betray.
23) How could television betray Homer's trust?
24) Friends are not books, yet books are friends. Friends may betray you, while books are always loyal.
25) If he is nervous on stage, he does not betray it.
26) Although she often seems quite cold and harsh, her smiling eyes betray her true nature.
27) Verily I say unto you,(http://sentencedict.com/betray.html) that one of you shall betray me.
28) She was terrified of saying something that would make her betray herself .
29) Only occasionally did the telltale redness around his eyes betray the fatigue he was suffering.
30) By not the merest flicker of an eyelid did he betray his interest.
More similar words: betrayal, betroth, betrothed, betrothal, tray, stray, astray, portray, ashtray, straying, portrayal, detract, retract, retrace, perpetrate, penetrate, free trade, detractor, retractile, retraction, retraining, detraction, perpetrator, penetrative, retractable, penetrating, impenetrable, free trade zone, active transport, ray.