Not so good (5)

'not so good' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for worse that I've seen before include "More severe; less well" , "More awful or unwell" , "Less favourable" , "Less good" , "Of poorer quality" .)
(Other definitions for meh that I've seen before include "am I bovvered?" , "expression of indifference" , "Not much cop" , "Unexciting (modern slang)" , "Who cares" .)