TV definition gets extremist intoxicated (9)

I believe the answer is:

ultrahigh

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'tv definition' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'extremist intoxicated' is the wordplay.
'extremist' becomes 'ultra' (ultra can mean an extremist or radical).
'intoxicated' becomes 'high' (similar in meaning).
'ultra'+'high'='ULTRAHIGH'

'gets' acts as a link.

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I've seen this clue in The Daily Express.

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