Isolated situation I’ve to worry about (5,5)

I believe the answer is:

ivory tower

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'isolated situation' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

'i've to worry about' is the wordplay.
'about' indicates anagramming the letters.
'ive'+'to'+'worry'='ivetoworry'
'ivetoworry' with letters rearranged gives 'IVORY TOWER'.

Can you help me to learn more?

(Other definitions for ivory tower that I've seen before include "State of seclusion from worldly realities" , "Academia (seen as secluded)" , "academic position" , "Seclusion from ordinary life" .)

I've seen this clue in The Times.

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