Humour eluding translation (7)
I believe the answer is:
indulge
'humour' is the definition.
(I know that humour is a more specific form of the action indulge)
'eluding translation' is the wordplay.
'translation' is an anagram indicator.
'eluding' anagrammed gives 'INDULGE'.
(Other definitions for indulge that I've seen before include "Gratify (an appetite)" , "Enjoy to excess" , "Yield to the wishes of" , "Give free rein to" , "Favour, gratify" .)