airless

/ˈɛrləs/
adjective
  1. Lacking fresh air; stuffy or not ventilated.
    • They opened all the windows to escape the airless cabin.
    • The basement was dark and airless, with no windows.
    • After the party, the room felt hot and airless.
  2. Having no air or atmosphere, like outer space.
    • Astronauts must wear suits to survive in the airless vacuum of space.
    • Without a spaceship, you cannot survive on that airless planet.
    • The moon is an airless world with no wind or weather.
Antonyms
What does "airless" mean? | whatsthatwordmean | whatsthatwordmean