Complaining (9)
'complaining' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for querulous that I've seen before include "Carping" , "Petulantly complaining" , "Whining" , "Plaintive" , "Cantankerous" .)
'complaining' is the definition.
(grumbling is a kind of complaining)
This is all the clue.
(Other definitions for grumbling that I've seen before include "Grouchily complaining" , "Moaning" .)