| noun | a loud low dull continuous noise “they heard the rumbling of thunder” |
| noun | a complaint uttered in a low and indistinct tone |
| verb | show one's unhappiness or critical attitude “He scolded about anything that he thought was wrong” |
| verb | make complaining remarks or noises under one's breath “she grumbles when she feels overworked” |
| verb | to utter or emit low dull rumbling sounds “he grumbled a rude response” |
| verb | make a low noise “rumbling thunder” |
| rumble | verb | to utter or emit low dull rumbling sounds |
| grumble | verb | make a low noise |
| murmur | verb | make complaining remarks or noises under one's breath |
| mutter | verb | make complaining remarks or noises under one's breath |
| grouch | noun | a bad-tempered person |
| grumble | noun | a complaint uttered in a low and indistinct tone |
| grumbler | noun | a person given to excessive complaints and crying and whining |
| scold | noun | someone (especially a woman) who annoys people by constantly finding fault |
| scolder | noun | someone (especially a woman) who annoys people by constantly finding fault |
| murmur | noun | a complaint uttered in a low and indistinct tone |
| murmuring | noun | a complaint uttered in a low and indistinct tone |
| murmurer | noun | a person who speaks softly and indistinctly |
| mutter | noun | a complaint uttered in a low and indistinct tone |
| muttering | noun | a complaint uttered in a low and indistinct tone |
| grumbling | noun | a complaint uttered in a low and indistinct tone |
| growler | noun | a speaker whose voice sounds like a growl |
| growling | noun | the sound of growling (as made by animals) |
| growl | noun | the sound of growling (as made by animals) |
| rumble | noun | a loud low dull continuous noise |
| rumbling | noun | a loud low dull continuous noise |