Safe to eat? Editor given terrible bile! (6)
I believe the answer is:
edible
'safe to eat?' is the definition.
(I've seen this before)
'editor given terrible bile' is the wordplay.
'editor' becomes 'ed'.
'given' means one lot of letters go next to another.
'terrible' is an anagram indicator.
'bile' anagrammed gives 'ible'.
'ed'+'ible'='EDIBLE'
(Other definitions for edible that I've seen before include "Fit for eating" , "Able to be eaten" , "Fit to be consumed" , "OK for eating" , "Comestible" .)