1. (

• rumble ,
• rumbling ,
• grumble ,
• grumbling

) a loud low dull continuous noise; "they heard the rumbling of thunder" ;

2. (

• grumble ,
• grumbling ,
• murmur ,
• murmuring ,
• mutter ,
• muttering

) a complaint uttered in a low and indistinct tone ;

1. (

• grouch ,
• grumble ,
• scold ,

) show one's unhappiness or critical attitude; "He scolded about anything that he thought was wrong"; "We grumbled about the increased work load" ;

2. (

• murmur ,
• mutter ,
• grumble ,
• croak ,
• gnarl

) make complaining remarks or noises under one's breath; "she grumbles when she feels overworked" ;

3. (

• grumble ,
• growl ,
• rumble

) to utter or emit low dull rumbling sounds; "he grumbled a rude response"; "Stones grumbled down the cliff" ;

4. (

• rumble ,
• grumble

) make a low noise; "rumbling thunder" ;

1. (

• grumbling ,
• rumbling

) continuous full and low-pitched throbbing sound; "the rumbling rolling sound of thunder" ;