Father's unruly teenager (8)

I believe the answer is:

generate

'father's' is the definition.
(I've seen this before)

'unruly teenager' is the wordplay.
'unruly' is an anagram indicator.
'teenager' with letters rearranged gives 'GENERATE'.

(Other definitions for generate that I've seen before include "Bring into existence for teenager" , "Create (power)" , "Cause to arise; produce" , "Produce, electricity say" , "Teenager (anag) - green tea (anag)" .)

I've seen this clue in The Telegraph.

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