Held in apprehension? (8)
I believe the answer is:
arrested
'held' is the definition.
(thesaurus)
'apprehension?' is the wordplay.
I cannot quite see how this works, but
'apprehension?' could be 'arrest' (synonyms) and 'arrest' is located in the answer.
The remaining letters 'ed' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for arrested that I've seen before include "Apprehended by police" , "stalled" , "Apprehended and taken into custody" , "Checked" , "Stopped or slowed down development" .)