Abandon one's beliefs or allegiances.

synonyms: apostatise, tergiversate.

Roget 607: change one's mind, change one's intention, change one's purpose, change one's note; abjure, renounce; withdraw from etc. (relinquish) 624; waver, vacillate; wheel round, turn round, veer round; turn a pirouette; go over from one side to another, pass from one side to another, change from one side to another, skip from one side to another; go to the rightabout; box the compass, shift one's ground, go upon another tack.    apostatize, change sides, go over, rat; recant, retract; revoke; rescind etc. (abrogate) 756; recall; forswear, unsay; come over, come round to an opinion; crawfish [U.S.], crawl [U.S.].    draw in one's horns, eat one's words; eat the leek, swallow the leek; swerve, flinch, back out of, retrace one's steps, think better of it; come back return to one's first love; turn over a new leaf etc. (repent) 950.    trim, shuffle, play fast and loose, blow hot and cold, coquet, be on the fence, straddle, bold with the hare but run with the hounds; nager entre deux eaux [Fr.]; wait to see how the cat jumps, wait to see how the wind blows.    ... show more

Dutch: afvallen