Intrepid daughter missing parent’s sister? (9)
I believe the answer is:
dauntless
'intrepid' is the definition.
(synonyms)
'daughter missing parent's sister?' is the wordplay.
I cannot quite understand how this works, but
'daughter' could be 'd' and 'd' is found within the answer.
'parent's sister?' could be 'aunt' (I've seen this before) and 'aunt' is present in the answer.
The remaining letters 'less' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
(Other definitions for dauntless that I've seen before include "Boldly determined" , "Bold" , "Brave" , "Resolute" , "Invulnerable to fear" .)