Green’s Dictionary of Slang

lit. credible; the term, as used mainly in the 1970s–80s by young people (and those who purvey their material wants), meant acceptable on a populist, anti-establishment, ‘street’ level, unaffected by puffery, artistic pretentiousness and similar negative trappings.

2001

T. Jepson at TobyJepson.com 🌐 I had had enough of the politics, the posturing for position, the endless shallow discussions about what is and is not ‘cred’ and ‘cool’.