Crossword Genius

Sure to change one's ways (6)

Ross

I believe the answer is:

routes

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'one's ways' is the definition.
'routes' can be an answer for 'ways' (route is a kind of way). I'm not certain of the 'one's' bit.

'sure to change' is the wordplay.
'change' indicates an anagram.
'sure'+'to'='sureto'
'sureto' with letters rearranged gives 'ROUTES'.

Can you help me to learn more?

(Other definitions for routes that I've seen before include "Ways to go for ouster" , "Ways, courses, journeys" , "Ways to go, roads" , "Courses or paths" , "passages" .)

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