Princeton's WordNet

1. fuel(verb)

   a substance that can be consumed to produce energy

   "more fuel is needed during the winter months"; "they developed alternative fuels for aircraft"

2. fuel(verb)

   provide with a combustible substance that provides energy

   "fuel aircraft, ships, and cars"

3. fuel, fire(verb)

   provide with fuel

   "Oil fires the furnace"

4. fuel(verb)

   take in fuel, as of a ship

   "The tanker fueled in Bahrain"

5. fuel(verb)

   stimulate

   "fuel the debate on creationism"

Kernerman English Learner's Dictionary

1. fuel(noun)ˈfyu əl

   a liquid or solid substance that produces energy when burned

   gasoline and other fuels

2. fuelˈfyu əl

   sth that encourages an activity

   The incident provided the fuel for further protests.

3. fuelˈfyu əl

   to make a bad situation worse

   The media coverage has just added fuel to the fire.

4. fuel(verb)ˈfyu əl

   to give power to sth

   hydrogen that can be used to fuel a hydrogen-powered car

5. fuelˈfyu əl

   to put fuel into a vehicle

   as they fueled up the military jets

6. fuelˈfyu əl

   to encourage an activity or feeling

   Rising oil prices and falling house prices fueled fears of a recession.; the money needed to fuel the rebuilding of the city

Wiktionary

1. fuel(Noun)

   Substance consumed to provide energy through combustion, or through chemical or nuclear reaction.

2. fuel(Noun)

   Substance that provides nourishment for a living organism; food.

3. fuel(Noun)

   Something that stimulates, encourages or maintains an action.

4. fuel(Verb)

   to provide fuel

5. fuel(Verb)

   to exacerbate, to cause to grow or become greater

Origin: : feuaile, from feu

Webster Dictionary

1. Fuel(noun)

   any matter used to produce heat by burning; that which feeds fire; combustible matter used for fires, as wood, coal, peat, etc

2. Fuel(noun)

   anything that serves to feed or increase passion or excitement

3. Fuel(verb)

   to feed with fuel

4. Fuel(verb)

   to store or furnish with fuel or firing

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