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English word wanker comes from English stink
stink (English)
(Caribbean, Guyana) Bad-smelling, stinky. (informal) A complaint or objection.. (slang, New Zealand) A failure or unfortunate event.. A strong bad smell. (intransitive) To give an impression of dishonesty or untruth.. (intransitive) To have a strong bad smell.. (intransitive, informal) To be greatly inferior; to perform badly.. (transitive) To cause to stink; to affect by a stink.
stinker (English)
(slang) A chemist.. (slang) A contemptible person.. (slang) Something difficult (e.g. a given puzzle) or unpleasant (e.g. negative review, nasty letter).. (slang) Something of poor quality.. A person who stinks.. Any of several species of large Antarctic petrels which feed on blubber and carrion and have an offensive odour, such as the giant fulmar.
stwanker (English)
wanker (English)
(obsolete, British, public school slang) A salted, and lightly smoked herring or mackerel; a bloater.