Crossword Genius

Better than getting one's wires crossed? (5)

Ross

I believe the answer is:

wiser

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'better' is the definition.
(thesaurus)

'than getting one's wires crossed?' is the wordplay.
'wires' anagrams to 'WISER'.
However, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for wiser that I've seen before include "showing more understanding?" , "More sensible" , "Having learned one's lesson?" , "more like Charles V" , "More shrewd" .)

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