High up I hear nothing strangely (8)

I believe the answer is:

euphoria

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But I can't explain it at all! Could you help me understand?

(Other definitions for euphoria that I've seen before include "Exaggerated elation?" , "Sense of wellbeing" , "Intense feeling of well-being and excitement" , "Ecstatic feeling" , "Feeling of extreme elation" .)

I've seen this clue in The Sun.

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