Delight experienced by vacuous couple seeing writer (5)
I believe the answer is:
joyce
'writer' is the definition.
(I know that Joyce is a writer)
'delight experienced by vacuous couple' is the wordplay.
'delight' becomes 'joy' (synonyms).
'experienced by vacuous couple' becomes 'ce' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'joy'+'ce'='JOYCE'
'seeing' acts as a link.
Can you help me to learn more?
(Other definitions for joyce that I've seen before include "lady" , "James ---, Irish modernist author" , "James . . . . ., William . . . . ." , "James -, Ulysses author" , "James . . . . ., great Irish novelist" .)