Sick rebel with a fever in trouble (9)
I believe the answer is:
beleaguer
'trouble' is the definition.
The definition and answer can be both to do with human feelings as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?
'sick rebel with a fever' is the wordplay.
'sick' indicates anagramming the letters.
'with' is an insertion indicator.
'a fever' becomes 'ague' (I've seen this before).
'rebel' anagrammed gives 'beler'.
'beler' enclosing 'ague' is 'BELEAGUER'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for beleaguer that I've seen before include "Surround" , "put in a very difficult situation" , "Put in a very difficult position" .)