| flow(utter, babble, whisper, ripple, mutter) |
| gabble |
| gibber |
| gossip(utter, murmur, sigh) |
| growl(utter, flow, babble, whisper, ripple) |
| gurgle(flow, babble, whisper, ripple, mutter) |
| hint(utter, murmur, sigh) |
| hum(utter, flow, babble, whisper, ripple) |
| insinuate(utter, murmur, sigh) |
| intimate(utter, murmur, sigh) |
| jabber |
| make low(expression, utter, babble, whisper, mutter) |
| meander(utter, flow, babble, whisper, ripple) |
| moan(utter, flow, babble, whisper, ripple) |
| purl(verb, flow, babble, whisper, ripple) |
| purr(utter, flow, babble, whisper, ripple) |
| ripple(flow, babble, whisper, mutter, mumble) |
| rumble(utter, flow, babble, whisper, ripple) |
| say softly(verb, expression, utter, murmur, sigh) |
| sibilate(verb, utter, murmur, sigh) |