Pretending modesty (3)
I believe the answer is:
coy
'pretending modesty' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for coy that I've seen before include "Reserved" , "Affectedly modest or shy" , "reluctant to divulge information" , "Pretending to be shy or embarrassed" , "not forthcoming" .)