Occasions teenagers ruined (9)

I believe the answer is:

generates

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'occasions' is the definition.
The answer and definition can be both to do with creating things as well as being verbs in their -s form.
Maybe you can see a link between them that I don't see?

'teenagers ruined' is the wordplay.
'ruined' indicates anagramming the letters.
'teenagers' anagrammed gives 'GENERATES'.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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