Reportedly so poorly (4)
I believe the answer is:
sick
'poorly' is the definition.
(I've seen this before)
'reportedly so' is the wordplay.
'reportedly' shows a homophone (sound like).
'so' becomes 'sic' ('sic' can be a synonym of 'so').
'sic' is a homophone of 'SICK'.
(Other definitions for sick that I've seen before include "Bad" , "Infirm" , "Ailing" , "well? Hardly" , "Ill, unwell" .)