wanker

listen to the pronunciation of wanker
English - English
A person who wanks
An idiot, a stupid, annoying or ineffectual person
Someone who shows off too much. Someone who is overly proud of himself
(Argo) (British English taboo - informal) a very offensive word for a boy or man who you think is stupid or unpleasant. Do not use this word
(Argo) Wanker is a pejorative term of British origin, common in Britain, Ireland, Australia, New Zealand, and British-influenced territories like South Africa, and gaining usage in Canada and the United States. It initially referred to "one who masturbates" but has since become a general insult. It is synonymous with tosser and toss-pot
terms of abuse for a masturbator
disapproval If someone calls a man a wanker, they do not like him and they think he is very stupid or unpleasant. a very offensive word for a boy or man who you think is stupid or unpleasant. Do not use this word
{i} jerk, stupid person, asshole (British slang)
wanker's cramp
An ache in the wrist caused by repetitive movements

It's amazing how you can get wanker's cramp from frantically squeezing a brake lever.

wankers
plural of wanker