Stereotypes of a senior stealing puzzles (15)

I believe the answer is:

generalisations

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'stereotypes' is the definition.
Both the definition and answer are plural nouns.
Maybe you can see an association between them that I can't see?

'a senior stealing puzzles' is the wordplay.
'puzzles' indicates an anagram.
'a'+'senior'+'stealing'='aseniorstealing'
'aseniorstealing' is an anagram of 'GENERALISATIONS'.

'of' is the link.

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I've seen this clue in the Sydney Morning Herald.

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