| gnarl(verb, rumble, murmur) |
| squawk(noun, verb, charge, protest, complain) |
| grumbling |
| mumble(noun, verb, sound, oppose, low) |
| lament(noun, verb, oppose, criticize, object) |
| muttering(noun, low, buzz) |
| whinge(noun, verb, criticize, protest, cry) |
| bellyache(noun, verb, oppose, criticize, object) |
| repine(verb, oppose, criticize, object, protest) |
| rumbling |
| thunder(noun, verb, sound, abuse, roar) |
| murmuring |
| buzz(noun, verb, low, rumble) |
| carp(verb, oppose, criticize, object, protest) |
| fuss(verb, oppose, criticize, object, protest) |
| roar(noun, verb, sound, protest, flash) |
| snap(verb, protest, complain, roar, speak) |
| snarl(noun, verb, protest, flash, complain) |
| sound(noun, thunder, reverberate) |
| wail(noun, verb, oppose, criticize, object) |