Describing oneself maybe as fixer, lever mostly repaired (9)
I believe the answer is:
reflexive
'describing oneself maybe' is the definition.
(reflexive language refers to the person using it)
'fixer lever mostly repaired' is the wordplay.
'mostly' means to remove the last letter.
'repaired' is an anagram indicator.
'fixer'+'lever'='fixerlever'
'fixerlever' with its final letter removed is 'fixerleve'.
'fixerleve' anagrammed gives 'REFLEXIVE'.
'as' acts as a link.
(Other definitions for reflexive that I've seen before include "Of word, referring back to subject of verb" , "Kind of pronoun like myself, himself etc" , "(Of an action) done without conscious thought" , "(Of an action) performed unconsciously" .)