vapour

/ˈveɪpər/
noun
  1. A substance in the form of a gas, especially one that is normally a liquid or solid at room temperature; visible moisture in the air, such as steam or mist.
    • Water vapour in the air condenses to form clouds.
    • The hot shower filled the bathroom with vapour.
    • Scientists study the vapour released by volcanoes.
  2. Something insubstantial or fleeting; an empty fancy or illusion.
    • His dreams of fame turned out to be vapour.
    • The politician's promises were vapour, soon forgotten.
    • She realized her anger was just vapour, fading quickly.
Synonyms
What does "vapour" mean? | whatsthatwordmean | whatsthatwordmean