Tolerate forsaking right gift (5)

I believe the answer is:

endue

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'gift' is the definition.
(synonyms)

'tolerate forsaking right' is the wordplay.
'tolerate forsaking' becomes 'en' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'right' becomes 'due' (due is a kind of right).
'en'+'due'='ENDUE'

Can you help me to learn more?

(Other definitions for endue that I've seen before include "Put on clothes" , "Invest (something) with a quality or ability" , "Make investment" , "Supply (with a quality/ability)" , "Invest - supply" .)

I've seen this clue in The Times.

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