(colloquial, chiefly, _, UK) Definitely.
A quick peep out of the window confirmed I was not in Clerkenwell. 'Dead sure about it. I can see the sea and everything. Deffos in Hawaii.'
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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