Resented having to struggle in the final stages (6)
I believe the answer is:
envied
'resented' is the definition.
(I've seen this in another clue)
'to struggle in the final stages' is the wordplay.
I cannot quite understand how this works, but
'struggle' could be 'vie' (to vie is to struggle or contend with) and 'vie' is located in the answer.
'final' could be 'end' (synonyms) and 'end' is found within the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'having' acts as a link.
Can you help me to learn more?
(Other definitions for envied that I've seen before include "Begrudged, coveted" , "Was jealous of, begrudged" , "Was jealous of (someone)" , "Looked greenly" , "Desired" .)