Moan, Mutter Under the Breath
This page is the CodyCross answer for the clue below from TV Station, Group 616, Puzzle 3 (Technical Problems).
Question
Moan, Mutter Under the Breath
Answer
GRUMBLE
Word Meaning:
GRUMBLE — (onomatopoeia) A high thundering, rumbling or growling sound.
Definitions from Wiktionary.