Crossword Genius

Unaffected by a vine gone wild (5)

Ross

I believe the answer is:

naive

I'm a little stuck... Click here to teach me more about this clue!

'unaffected' is the definition.
(both can mean sincere or unpretentious)

'a vine gone wild' is the wordplay.
'a vine' anagrams to 'NAIVE'.
Though, I am not clear how this is indicated.

'by' is the link.

Can you help me to learn more?

(Other definitions for naive that I've seen before include "Too innocent or gullible" , "Ingenuous and credulous" , "Too credulous or trusting" , "Too simple and trusting" , "Innocent and credulous" .)

I've seen this clue in the Sydney Morning Herald.
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