Any fuel derived from hydrocarbon deposits such as coal, petroleum, natural gas and, to some extent, peat; these fuels are non-renewable, and their burning moves carbon from underground into the atmosphere via the greenhouse gas carbon dioxide.
The gaseous state of a substance that is normally a solid or liquid.
Cloudy diffused matter such as mist, steam or fumes suspended in the air.
Something insubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting.
To emit vapor or fumes.
To give (someone) the vapors; to depress, to bore.
To become vapor; to be emitted or circulated as vapor.
To turn into vapor.
To use insubstantial language; to boast or bluster.