- un
- un [ən] pron BrE spokengood 'un/bad 'un/little 'un etca short form of 'one', used to say that someone or something is good, bad etc. Teachers and careful speakers of English do not use this expression▪ He's a bad 'un.▪ I ought to collect the little 'uns (=young children) from school.
Dictionary of contemporary English. 2013.