rotter

Definitions of rotter
1

n a person who is deemed to be despicable or contemptible

“only a rotter would do that”
Synonyms:
bum, crumb, dirty dog, git, lowlife, puke, rat, skunk, so-and-so, stinker, stinkpot
Type of:
disagreeable person, unpleasant person
a person who is not pleasant or agreeable

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