Reportedly horrible medicine container (4)
I believe the answer is:
vial
'medicine container' is the definition.
(I've seen this before)
'reportedly horrible' is the wordplay.
'reportedly' indicates a 'sounds like' (homophone) clue.
'horrible' becomes 'vile' (I've seen this before).
'vile' sounds like 'VIAL'.
(Other definitions for vial that I've seen before include "Ampoule" , "Bottle that contains a drug" , "Small container for liquids" , "Small medicine bottle" , "Small bottle used for medicines, laboratory work, etc" .)