Synonyms and Antonyms of rat on
1 to give information (as to the authorities) about another's improper or unlawful activities how much—or how little—did the fuzz have to pay you to rat on us? Synonyms fink, grass (on) [British slang], inform, squeal (on), sing, snitch, split (on) [British], squeak, talk, tell (on)Related Words betray, give away, turn in; backstab, cross, double-cross, sell (out), two-time; blab, tattle; tip (off)
2 to leave (a cause or party) often in order to take up another many party operatives ratted on the senator's candidacy once her poll numbers started to slip Synonyms desert, defect (on)Related Words abandon, abdicate, abjure, apostatize, cut off, disown, forsake, quit, reject, renounce, repudiate, spurn; renege; depart, go, leave, withdrawNear Antonyms adhere (to), cling (to), stick (to or with); cherish, cultivate, foster
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