Reluctant to draw attention to oneself (8)
I believe the answer is:
retiring
'reluctant to draw attention to oneself' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for retiring that I've seen before include "Shy, avoiding company" , "Timid" , "Shy - going to bed" , "Like an unassertive person" , "going up the stairs?" .)