Respondent in case of abduction taking oath's not adult (9)
I believe the answer is:
answering
'respondent' is the definition.
(synonyms)
'in case of abduction taking oath's not adult' is the wordplay.
I cannot really see how this works, but
'in' is within the answer.
'adult' could be 'a' (abbreviation) and 'a' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for answering that I've seen before include "Replying" , "Responding" , "Picking up receiver" , "Acknowledging" .)