Enthusiastic Jedward entertaining hosts (6)
I believe the answer is:
ardent
'enthusiastic' is the definition.
('ardent' can be similar in meaning to 'enthusiastic')
'jedward entertaining hosts' is the wordplay.
'hosts' indicates the answer is hidden within the clue.
'ARDENT' is hidden within 'jedward entertaining'.
(Other definitions for ardent that I've seen before include "Passionate, fervent" , "Having great warmth of feeling like a lover" , "Fiery and zealous" , "'Fervent, impassioned (6)'" , "Fervid" .)