Grumble, Mutter to Oneself
This page is the CodyCross answer for the clue below from TV Station, Group 612, Puzzle 2 (Radio Antenna).
Question is: Grumble, Mutter to Oneself
and the answer is: CHUNTER
Word Meaning:
CHUNTER — (British, Ireland, dialect) To speak in a soft, indistinct manner, mutter.
Definitions from Wiktionary.