Enlightens polite hipsters every so often (9)

I believe the answer is:

civilises

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'enlightens' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'polite hipsters every so often' is the wordplay.
'polite' becomes 'civil' (synonyms).
'every so often' means one should take alternating letters.
The alternate letters of 'hipsters' are 'ises'.
'civil'+'ises'='CIVILISES'

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I've seen this clue in The Hindu.

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