Is “Chunter” a Scrabble word?
Yes
CHUNTER
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Chunter
/ˈtʃʌn.tə/
verb
1.To speak in a soft, indistinct manner, mutter.
2.To grumble, complain.