plonker
noun/ˈplɒŋkə(r)/
/ˈplɑːŋkər/
(British English, slang)- a stupid person
- You’re a right plonker.
Word Originmid 19th cent. (as a dialect word meaning ‘something large of its kind’): from the verb plonk + -er.Definitions on the go
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plonker