chavchav /tʃæv/ noun [countable] British English 
an offensive word used especially by newspapers to talk about a young working-class person who is rude and aggressive, has a low level of education, and who wears a certain style of fashionable clothing such as trainers, sportswear, and baseball caps
an offensive word used especially by newspapers to talk about a young working-class person who is rude and aggressive, has a low level of education, and who wears a certain style of fashionable clothing such as trainers, sportswear, and baseball caps