borbottare betyder på engelska

chunter▼(grumble, complain)
verb

grumble [grumbled, grumbling, grumbles]▼verb
[UK: ˈɡrʌm.bl̩] [US: ˈɡrʌm.bl̩]He grumbled. = Ha borbottato.

mumble [mumbled, mumbling, mumbles]▼(to speak unintelligibly)
verb
[UK: ˈmʌm.bl̩] [US: ˈmʌm.bl̩]John mumbled. = John ha borbottato.

utter [uttered, uttering, utters]▼verb
[UK: ˈʌ.tə(r)] [US: ˈʌ.tər]