Actor Borgnine (6)
I believe the answer is:
ernest
'actor borgnine' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ernest that I've seen before include "Name beloved of Gwen Fairfax (Wilde)" , "American writer . . . . . . Hemingway" , "Resent (anag) - man" , "- Bevin, twentieth century Labour politician" , "The boy sounds serious" .)