Oti Mabuse dancing like a fox for Strictly (12)

I believe the answer is:

abstemiously

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'strictly' is the definition.
Both the definition and answer are adverbs. Maybe they are linked in a way I don't understand?

'oti mabuse dancing like a fox' is the wordplay.
'dancing' indicates anagramming the letters.
'like a fox' becomes 'sly' (I've seen this in another clue).
'oti'+'mabuse'='otimabuse'
'otimabuse' anagrammed gives 'abstemiou'.
'abstemiou'+'sly'='ABSTEMIOUSLY'

'for' acts as a link.

Can you help me to learn more?

(Another definition for abstemiously that I've seen is " sober manner".)

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