Have great delight taking in a show (6)
I believe the answer is:
reveal
'show' is the definition.
(synonyms)
'have great delight taking in a' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
'delight' could be 'revel' (I've seen this before) and 'revel' is found in the leftover letters.
No letters remain.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for reveal that I've seen before include "Expose or disclose" , "Make known to others" , "Open up" , "Remove cover, unveil" , "Expose or display" .)