Intimidate daughter, female relative (5)
I believe the answer is:
daunt
'intimidate' is the definition.
(daunting is a kind of intimidating)
'daughter female relative' is the wordplay.
'daughter' becomes 'd'.
'female relative' becomes 'aunt' (I've seen this before).
'd'+'aunt'='DAUNT'
(Other definitions for daunt that I've seen before include "Frighten, intimidate" , "Make (someone) apprehensive" , "Cow" , "Dishearten" , "Discourage" .)