Last, not penultimate gift (5)
I believe the answer is:
endue
'gift' is the definition.
(synonyms)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for endue that I've seen before include "Provide or imbue" , "Supply (with a quality/ability)" , "Invest - supply" , "Invest - provide" , "Put on clothes" .)