yob

Concise Oxford English Dictionary © 2008 Oxford University Press:
yob/jɒb/

▶noun Brit. informal a rude, noisy, and aggressive youth.

– derivatives
yobbery noun,
yobbish adjective,
yobbishly adverb,
yobbishness noun,
yobby adjective.

– origin C19: back slang for boy.