| Main Entry: | |
| Part of Speech: | verb |
| Definition: | attack indirectly |
| Synonyms: | backbite, betray, double-cross, play Judas, sell down the river, slander, smear |
| Main Entry: | double-cross |
| Part of Speech: | verb |
| Definition: | to deceive or betray someone |
| Synonyms: | beguile, betray, bluff, cheat, con, cross, deceive, defraud, double deal, dupe, four-flush, hoodwink*, humbug, illude, juggle, mislead, scam, sell, sell down the river, sell out, sell out, split, stab in the back, swindle, take in, trick, two-time, two-time |
| Antonyms: | be open, tell truth |
| Main Entry: | sell/sell out |
| Part of Speech: | verb |
| Definition: | betray |
| Synonyms: | beguile, break faith, bunk, cross, deceive, deliver up, delude, disappoint, double-cross, fail, four-flush, give away, give up, mislead, play false, rat on, sell down the river, stab in the back, surrender, take in, violate |
| Antonyms: | guard, protect |
| Main Entry: | squeal |
| Part of Speech: | verb |
| Definition: | inform on |
| Synonyms: | betray, blab, complain, protest, rat on, sell down the river, sing*, snitch, squawk, talk, tattle, tattletale, tell |
| Antonyms: | conceal, hide |
| Main Entry: | stab in the back |
| Part of Speech: | verb |
| Definition: | attack unsuspecting person |
| Synonyms: | abandon, backstab, be disloyal, be unfaithful, betray, break promise, commit treason, cross, deceive, double-cross, doublecross, finger*, go back on, inform on, play Judas, sell down the river, sell down the river, sell out, trick, turn in, turn informer, turn traitor |
| Main Entry: | blow the whistle |
| Part of Speech: | verb |
| Definition: | inform on |
| Synonyms: | finger, rat, sell down the river, sell out, snitch, spill the beans, squawk, squeal, weasel |