Longman Dictionary of Contemporary English
EXAMPLES FROM CORPUS
▪ I looked for the name of yoof goddess Janet Street-Porter on the credits.
▪ Slash'n'sideburn pop is what you get when Manc yoof grows up angry and facially bristling.
n. 1 (context British slang English) youth (''young person, young people or the state of being young''). 2 (''used as a modifier before a noun'') Of or relating to youth or youths; intended for youths.