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rotter n : a person who is deemed to be despicable or contemptible; "only a rotter would do that"; "kill the rat"; "throw the bum out"; "you cowardly little pukes!"; "the British call a contemptible person a `git'" [syn: {dirty dog}, {rat}, {skunk}, {stinker}, {stinkpot}, {bum}, {puke}, {crumb}, {lowlife}, {scum bag}, {so-and-so}, {git}]