Elevated wild delta at the end of the Nile (6)
I believe the answer is:
elated
'elevated' is the definition.
(thesaurus)
'wild delta at the end of the nile' is the wordplay.
'wild' indicates an anagram.
'at the end of' indicates one should take the final letters.
The last letter of 'nile' is 'e'.
'delta'+'e'='deltae'
'deltae' with letters rearranged gives 'ELATED'.
(Other definitions for elated that I've seen before include "Blissful" , "On cloud nine" , "Exhilarated, highly excited" , "In an enraptured state" , "Overjoyed, in high spirits" .)