All alone, Ali runs wild! (7)

I believe the answer is:

insular

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'all alone' is the definition.
'insular' can be an answer for 'alone' (thesaurus). I'm not sure about the 'all' bit.

'ali runs wild' is the wordplay.
'wild' indicates anagramming the letters.
'ali'+'runs'='aliruns'
'aliruns' anagrammed gives 'INSULAR'.

Can you help me to learn more?

(Other definitions for insular that I've seen before include "Isolated -- urinals (anag)" , "Man may be thus described" , "Provincial" , "Lacking contact with other people" , "Run sail (anag.)" .)

I've seen this clue in the Evening Standard.

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