Synonyms of betray in English:

betray


See definition of betray

verb

1‘I trusted them and they betrayed me’

SYNONYMS

break one's promise to, be disloyal to, be unfaithful to, break faith with, play someone false, fail, let down

double-cross, deceive, cheat

inform against, inform on, give away, denounce, sell out, stab someone in the back, be a Judas to, give someone a Judas kiss, bite the hand that feeds one

turn traitor, sell the pass

turn King's evidence, turn Queen's evidence

informal split on, blow the whistle on, rat on, peach on, stitch up, do the dirty on, sell down the river, squeal on, squeak on

British informal grass on, shop, sneak on

North American informal rat out, drop a dime on, drop the dime on, finger, job

NZ Australian informal dob on, pimp on, pool, shelf, put someone's pot on, point the bone at

rare delate

ANTONYMS

be loyal to

2‘she hoped her face didn't betray her feelings’

SYNONYMS

reveal, disclose, divulge, give away, leak, lay bare, make known, uncover, unmask, expose, bring out into the open, tell

let slip, let out, let drop, blurt out

give the game away, let the cat out of the bag

informal blab, spill

archaic discover

ANTONYMS

conceal, hide