right on

right on 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.'

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