squeaker
[noun]
Synonyms: informer, betrayer, canary, fink, nark, snitch, squealer, stoolie, stool pigeon, tipster

[TahlilGaran] English Synonym Dictionary ▲

squeaker noun

1. a competition or election won by only a small amount or likely to be won by only a small amount

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[TahlilGaran] English Dictionary ▲