windless
Perfectly still air
Windless means without wind—calm and still: a windless summer afternoon, The lake was perfectly smooth on that windless day.
The word describes weather conditions or environments where air is not moving.
Separately, a windlass (often confused with windless) is a mechanical device for hauling or lifting.
Having no atmosphere
- suffocatingDepriving of air
- stiflingOppressively hot and close
- oppressiveUnjustly harsh or stifling
- heavyOf great mass
close · humid · stuffy · muggy · breathless · sweltering · sultry · thick
Calm and untroubled
- sereneUntroubled and composed
- peacefulFree from disturbance
- stillUnmoving, or continuing
- placidCalm, undisturbed
glassy · mirrorlike · unruffled · undisturbed · quiet · motionless · becalmed · slack
airless
Having no atmosphere
- suffocatingDepriving of air
- stiflingOppressively hot and close
- oppressiveUnjustly harsh or stifling
heavy · close · humid · stuffy · muggy · breathless · sweltering · sultry · thick · smothering
tranquil
Calm and untroubled
placid · glassy · mirrorlike · unruffled · undisturbed · quiet · motionless · becalmed · slack · gentle
- Wind termscalm, breezy, gusty, blustery, still
- stillnessstillness, motionless, motionlessness, immobility, unmoving