Crossword Genius

Turning mean, tried it on, showing tenacity (13)

Ross

I believe the answer is:

determination

'tenacity' is the definition.
(thesaurus)

'turning mean tried it on' is the wordplay.
'turning' indicates an anagram.
'mean'+'tried'+'it'='meantriedit'
'meantriedit' anagrammed gives 'determinati'.
'determinati'+'on'='DETERMINATION'

'showing' is the link.

(Other definitions for determination that I've seen before include "Resolution" , "Resoluteness" , "Firm resolve" , "Firmness of purpose" , "legal decision" .)

I've seen this clue in The Telegraph.
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