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.
Substance consumed to provide energy through combustion, or through chemical or nuclear reaction.
Substance that provides nourishment for a living organism; food.
Something that stimulates, encourages or maintains an action.
To exacerbate, to cause to grow or become greater.
To provide with fuel.