Crossword Genius

Pedant tense? No, it's I, corrected (13)

Ross

I believe the answer is:

perfectionist

'pedant' is the definition.
(thesaurus)

'tense? no it's i corrected' is the wordplay.
'tense?' becomes 'perfect' (perfect is a kind of tense**).
'corrected' indicates anagramming the letters.
'no'+'its'+'i'='noitsi'
'noitsi' is an anagram of 'ionist'.
'perfect'+'ionist'='PERFECTIONIST'

(Other definitions for perfectionist that I've seen before include "One striving for an ideal standard" , "Striver for the ideal" , "One seeking the ideal" , "One aiming for the best" , "I expect the best" .)

I've seen this clue in The Telegraph.
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