Reveal unintentionally:
— Her smile betrayed her true feelings.

synonym: bewray.

Roget 940: be dishonest etc. adj.; play false; break one's word, break one's faith, break one's promise; jilt, betray, forswear; shuffle etc. (lie) 544; live by one's wits, sail near the wind.    disgrace oneself, dishonor oneself, demean oneself; derogate, stoop, grovel, sneak, lose caste; sell oneself, go over to the enemy; seal one's infamy.    ... show more

Dutch: verraden

Deliver to an enemy by treachery:
— The spy betrayed his country.

synonym: sell.

Roget 545: deceive, take in; defraud, cheat, jockey, do, cozen, diddle, nab, chouse, play one false, bilk, cully^†, jilt, bite, pluck, swindle, victimize; abuse; mystify; blind one's eyes; blindfold, hoodwink; throw dust into the eyes; dupe, gull, hoax, fool, befool^†, bamboozle, flimflam, hornswoggle; trick.    impose upon, practice upon, play upon, put upon, palm off on, palm upon, foist upon; snatch a verdict; bluff off, bluff; bunko, four flush [Slang], gum [U.S.], spoof [Slang], stuff (a ballot box) [U.S.].    circumvent, overreach; outreach, out wit, out maneuver; steal a march upon, give the go-by, to leave in the lurch decoy, waylay, lure, beguile, delude, inveigle; entrap, intrap^†, ensnare; nick, springe^†; set a trap, lay a trap, lay a snare for; bait the hook, forelay^†, spread the toils, lime; trapan^†, trepan; kidnap; let in, hook in; nousle^†, nousel^†; blind a trail; enmesh, immesh^†; shanghai; catch, catch in a trap; sniggle, entangle, illaqueate^†, hocus, escamoter^†, practice on one's credulity; hum, humbug; gammon, stuff up [Slang], sell; play a trick upon one, play a practical joke upon one, put something over on one, put one over on; balk, trip up, throw a tub to a whale; fool to the top of one's bent, send on a fool's errand; make game, make a fool of, make an April fool of^†, make an ass of; trifle with, cajole, flatter; come over etc. (influence) 615; gild the pill, make things pleasant, divert, put a good face upon; dissemble etc. 544.    cog, cog the dice, load the dice, stack the deck; live by one's wits, play at hide and seek; obtain money under false pretenses etc. (steal) 791; conjure, juggle, practice chicanery; deacon [U.S.].    play off, palm off, foist off, fob-off.    lie etc. 544; misinform etc. 538; mislead etc. (error) 495; betray etc. 940; be deceived etc. 547.    ... show more

Dutch: verlinken, verraden

Disappoint, prove undependable to; abandon, forsake.

synonym: fail.

Dutch: onthullen, verspreken

Be sexually unfaithful to one's partner in marriage.

synonyms: cheat, cheat on, cuckold, wander.

Dutch: bedriegen, echtbreken, hoorndrager, vals spelen, vreemdgaan

Give away information about somebody.

synonyms: denounce, give away, grass, rat, shit, shop, snitch, stag, tell on.

Roget 529: disclose, discover, dismask^†; draw the veil, draw aside the veil, lift the veil, raise the veil, lift up the veil, remove the veil, tear aside the veil, tear the curtain; unmask, unveil, unfold, uncover, unseal, unkennel; take off the seal, break the seal; lay open, lay bare; expose; open, open up; bare, bring to light.    divulge, reveal, break; squeal [Coll.], tattle [Coll.], sing [Coll.], rat [Coll.], snitch [Coll.]; let into the secret; reveal the secrets of the prison house; tell etc. (inform) 527; breathe, utter, blab, peach; let out, let fall, let drop, let slip, spill the beans, let the cat out of the bag; betray; tell tales, come out of school; come out with; give vent, give utterance to; open the lips, blurt out, vent, whisper about; speak out etc. (make manifest) 525; make public etc. 531; unriddle etc. (find out) 480.1; split.    acknowledge, allow, concede, grant, admit, own, own up to, confess, avow, throw off all disguise, turn inside out, make a clean breast; show one's hand, show one's cards; unburden one's mind, disburden one's mind, disburden one's conscience, disburden one's heart; open one's mind, lay bare one's mind, tell a piece of one's mind [Fr.]; unbosom oneself, own to the soft impeachment; say the truth, speak the truth; turn King's evidence, Queen's evidence; acknowledge the corn [U.S.].    raise the mask, drop the mask, lift the mask, remove the mask, throw off the mask; expose; lay open; undeceive^†, unbeguile^†; disabuse, set right, correct, open the eyes of; d_esillusionner.    be disclosed &c.; transpire, come to light; come in sight etc. (be visible) 446; become known, escape the lips; come out, ooze out, creep out, leak out, peep out, crop-out; show its face, show its colors; discover itself &c.; break through the clouds, flash on the mind.    ... show more

Dutch: misleiden, aangeven, verklikken, bedriegen, verklappen, verlullen, verraden

Cause someone to believe an untruth.

synonyms: deceive, lead astray.

Dutch: bedonderen, bedriegen, beduvelen, belazeren, besjoemelen, besodemieteren, kloten, naaien, oetsen, rollen, verlakken, vernachelen, verneuken, verneuriën, wijsmaken ... show more