Screen epic once, albeit not completely (7)
I believe the answer is:
conceal
'screen' is the definition.
(thesaurus)
'epic once albeit not completely' is the wordplay.
'not completely' indicates a hidden word.
'CONCEAL' is hidden in the letters of 'epic once albeit'.
(Other definitions for conceal that I've seen before include "Place out of sight" , "Hide, cover" , "Screen" , "hush up!" , "'Hide, keep secret (7)'" .)