Word.ws English Dictionary

Synonyms of spark plug

5 similar words

Another word for spark plug is straw that stirs the drink. Other synonyms of spark plug are catalyst, instigator, mover and shaker and stimulus.

Synonyms and similar words for spark plug

nounSomeone who is a driving force in new endeavours.

  • straw that stirs the drinkThe person who stimulates or inspires a group; the major factor affecting a trend or set of developments.
  • catalyst
  • instigatorA person who intentionally instigates, incites, or starts something, especially one that creates trouble.
  • mover and shakerSomeone who has power and influence in a field or activity; one who accomplishes tasks, who gets things done.
  • stimulus

Meaning of spark plug

  1. noun The part of some internal combustion engines which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke. (Petrol engines have spark plugs. Diesel engines do not have them because the heat from their high compression ratios supplies the ignition.).
  2. noun Someone who is a driving force in new endeavours.
  3. noun A rod (for cylindrical secondaries) or sphere (for spherical secondaries) of fissile material at the center of the secondary of a multistage thermonuclear weapon, which undergoes nuclear fission when compressed to supercriticality by the imploding secondary, helping to raise the secondary to the pressures and temperatures necessary to ignite nuclear fusion in the secondary's fusion fuel.

Full definition of spark plug

spark plug in other languages

Questions about synonyms of spark plug

What is another word for spark plug?
Spark plug has 5 synonyms on Word.ws, such as straw that stirs the drink, catalyst, instigator, mover and shaker and stimulus.
What does spark plug mean?
Spark plug means the part of some internal combustion engines which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke. (Petrol engines have spark plugs. Diesel engines do not have them because the heat from their high compression ratios supplies the ignition.).

Source and license

Adapted from Wiktionary: spark plug (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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