Absurd, getting no credit? Not to be stomached (8)
I believe the answer is:
inedible
'not to be stomached' is the definition.
(ie not to be taken into one's stomach)
'absurd getting no credit?' is the wordplay.
'absurd' becomes 'incredible'.
'getting no' indicates named letters should be taken away.
'credit?' becomes 'cr'.
'incredible' with 'cr' taken out is 'INEDIBLE'.
(Other definitions for inedible that I've seen before include "Awful to taste" , "not to be swallowed" , "Uneatable" , "Not fit for eating" , "Not fit for consumption" .)