- Cycle of prosperity; ... and bust - Low resounding noise - Movie lot's ... mic - Period of great prosperity - Prosperous period - Sound barrier crash noise, sonic ... - Sound of an explosion
- Buzz - Continuous murmur in a hive of activity? - Low noise - Sing with closed lips - Sing without words - To make a low, prolonged sound, like that of a bee in
flight; to drone; to murmur; to buzz; as, a top hums. - To make a nasal sound, like that of the letter m prolonged,
without opening the mouth, or articulating; to mumble in monotonous
undertone; to drone.
- Gang fight - Low noise - To make a low, heavy, continued sound; as, the thunder
rumbles at a distance. - To murmur; to ripple. - A noisy report; rumor. - A low, heavy, continuous sound like that made by heavy
wagons or the reverberation of thunder; a confused noise; as, the
rumble of a railroad train. - A seat for servants, behind the body of a carriage.
- Grumble - Mumble - Speak quietly - To utter words indistinctly or with a low voice and lips
partly closed; esp., to utter indistinct complaints or angry
expressions; to grumble; to growl. - To sound with a low, rumbling noise. - To utter with imperfect articulations, or with a low
voice; as, to mutter threats. - Repressed or obscure utterance.