[Meh] (5)
(Other definitions for shrug that I've seen before include "Express indifference" , "women's wear" , "Uncaring gesture" , "Shoulder gesture" , "Gesture with one's shoulders" .)
'meh' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for blah that I've seen before include "Rhubarb" , "Claptrap" , "Pretentious waffle" , "bunkum!" , "Bombast" .)
(Other definitions for soso that I've seen before include "Indifferent" , "mediocre" .)