ˌright ˈon BrE AmE adjective informal
1 . British English someone who is right on supports social justice, equal rights, the protection of the environment etc – often used to show disapproval because someone does this in an extreme way ⇨ PC , politically correct :
It’s one of those annoyingly right-on magazines about the environment.
2 . American English someone is right on when they say something that is correct or that you completely agree with:
Parker’s column on teenage sexuality is right on.
3 . American English spoken old-fashioned used to emphasize that you agree with what someone says or does:
‘Power to the people!’ ‘Yeah, right on.’