Utter nonsense (5)
I believe the answer is:
tripe
'utter nonsense' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tripe that I've seen before include "Ruminant's stomach, prepared for cooking" , "Swallowed" , "Rubbish (colloq.)" , "which a freegan might eat?" , "Something to eat" .)