Final word for one about to retire (9)
I believe the answer is:
goodnight
'one about to retire' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'final word' is the wordplay.
I cannot quite see how this works, but
'word' could be 'good' (good word is a kind of word) and 'good' is found within the answer.
The remaining letters 'night' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Other definitions for goodnight that I've seen before include "retirement wish" , "Final greeting" , "Statement on retirement" , "dark valediction, perhaps" .)