British slang (archaic) meaning attractive, excellent, or high-quality; also used as a noun for a worthy or excellent person.
From Romani or underworld English slang, used in 17th-18th century British dialect. Related to 'dimble' (a small value), the term evolved to mean 'distinguished' or 'noteworthy.'
Dimber was London street slang for 'cool' or 'excellent'—it's wild that pickpockets and hustlers had their own compliment words that almost disappeared from English!
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