thrum
Engine's low hum
Thrum has two distinct sources.
One refers to the fringe of warp threads left on a loom after cloth is cut away, or any short loose thread or tuft.
The other thrum means to strum or pluck strings idly, producing a low, continuous sound: Rain thrummed against the window.
The noun names that droning, rhythmic hum: the thrum of the engine.
Continuous low drone
- droneUnmanned flying machine
- humLow steady sound
- whirContinuous humming sound
- purrFeline contentment sound
murmur · pulsate · throb · quiver · tremor · oscillation · resonance · flutter
Bend from true form
- loomFabric-making frame
- fringeOutermost edge or margin
- yarnTwisted strand for crafts
- threadFiber for stitching
textile · fabric · selvage · weft · fiber · tassels · ends · tuft
Reducing distress or discomfort
- hypnoticInducing trance or slumber
- lullingCalming into tranquility
- meditativeInclined toward deep reflection
- steadyFixed, not fluctuating
drone · ambient · relaxing · gentle · sleep-inducing · constant · rhythmic · tranquil
Rhythmic pulse or strike
- pulseArterial blood throb
- tempoRate of musical performance
- cadenceRhythmic pulse or pattern
- patterQuick rehearsed speech
drumming · tattoo · strum · tap · percussion · syncopation · backbeat · meter
Amplified oscillation at natural frequency
- reverberationProlonged reflected sound
- lowNot elevated
- pitchFrequency of sound
- toneQuality of sound
timbre · acoustic · sustained · continuous · background · ambient · monotone · din
buzz
Continuous low drone
purr · murmur · pulsate · throb · quiver · tremor · oscillation · resonance · flutter · pulsation
warp
Bend from true form
thread · textile · fabric · selvage · weft · fiber · tassels · ends · tuft · strand
soothing
Reducing distress or discomfort
- hypnoticInducing trance or slumber
- lullingCalming into tranquility
- meditativeInclined toward deep reflection
steady · drone · ambient · relaxing · gentle · sleep-inducing · constant · rhythmic · tranquil · mellow
beat
Rhythmic pulse or strike
patter · drumming · tattoo · strum · tap · percussion · syncopation · backbeat · meter · pattern
resonance
Amplified oscillation at natural frequency
- reverberationProlonged reflected sound
- lowNot elevated
- pitchFrequency of sound
tone · timbre · acoustic · sustained · continuous · background · ambient · monotone · din · audible
- sound wordsclick, clank, cacophony, clink, crash
- vibrationsvibration, oscillation, resonance, mechanical vibrations, tremor
- humshum, electrical hum, motor hum, refrigerator hum
- bass soundsbass note, bass tone, bass drum, bass guitar, bass voice
- Unsteady Motionshake, vibrate, vibration, tremor, oscillating