Loathsome person (4)
I believe the answer is:
toad
'loathsome person' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for toad that I've seen before include "not found in Ireland" , "Wind in Willows hall-owner" , "Ancestral hall on River Bank" , "Contemptible person" , "driver of reckless repute" .)