An out-of-the-way route (5)

I believe the answer is:

outre

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'an out-of-the-way' is the definition.
(thesaurus)

'route' is the wordplay.
'route' anagrams to 'OUTRE'.
Though, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for outre that I've seen before include "Shocking - route (anag)" , "Exotic" , "Remarkable" , "Going too far" , "Eccentric, improper" .)

I've seen this clue in The Globe and Mail.

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