noiseless
Without any sound
Noiseless means making no sound or very little sound: the noiseless flight of an owl, noiseless footsteps on carpet.
The word often describes things engineered or naturally suited to operate quietly: a noiseless fan, noiseless typing.
It suggests complete absence of sound rather than merely quiet.
Producing no audible noise
- inaudibleCannot be heard
- hushedReduced to silence
- muteWithout voice or sound
- unheardNot perceived aurally
whisper · soft · murmur · muffled · subdued · low · gentle · still
Calm and untroubled
- sereneUntroubled and composed
- placidCalm, undisturbed
- calmFree from agitation
- restfulPeaceful and calming
soothing · undisturbed · harmonious · idyllic · pastoral · meditative · reposeful · stillness
Not discovered yet
- covertIntentionally concealed
- surreptitiousDone secretly, avoiding detection
- furtiveSecretive and sly
- stealthySecretly cautious in movement
sneaking · creeping · prowling · ghostly · shadowy · elusive · clandestine · secretive
Without roughness or difficulty
- frictionlessHaving no resistance
- well-oiledSmoothly efficient, friction-free
- electricPowered by current
- cushionedMade softer or gentler
precision · engineered · lubricated · seamless · gliding
soundless
Producing no audible noise
unheard · whisper · soft · murmur · muffled · subdued · low · gentle · still · breathless
tranquil
Calm and untroubled
restful · soothing · undisturbed · harmonious · idyllic · pastoral · meditative · reposeful · stillness · zen
undetected
Not discovered yet
- covertIntentionally concealed
- surreptitiousDone secretly, avoiding detection
- furtiveSecretive and sly
stealthy · sneaking · creeping · prowling · ghostly · shadowy · elusive · clandestine · secretive · catlike
smooth
Without roughness or difficulty
- frictionlessHaving no resistance
- well-oiledSmoothly efficient, friction-free
- electricPowered by current
cushioned · precision · engineered · lubricated · seamless · gliding
- quiet wordswhisper, murmur, shh, muted, muffled
- silencequiet, silent, mute, hush, stillness
- stillnessstillness, motionless, motionlessness, immobility, unmoving
- ___ silencedeathly, eerie, awkward, uncomfortable, stunned