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booster

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Etymology and origin of the English word booster

Confidence
Established
Formation
Derivation
First attested
1885
Ultimate origin
English boost,-er
Etymology tree
inherited borrowed derived
English boost
English booster

Pronunciation

  • US: /ˈbustɚ/[1]

Etymology

It is formed from English boost + -er,[2][3][4][5][6] the agent noun of the verb boost, an American word recorded from 1815 and of unknown origin.[5][4] The word began as an Americanism.[6][3]

Earliest recorded meaning

One who boosts or promotes something: 1885 according to Etymonline and Dictionary.com.[5][6] Merriam-Webster dates it to 1888, and the OED's and Barnhart's first record is of 1890, in the Stock Grower.[7][2][4]

Semantic evolution

The first booster was a person who pushed something up, especially an enthusiastic promoter of a town or cause;[5][7] boosterism is recorded from 1902.[5] In 1894 the word was applied to a machine that raises the electromotive force in an electrical circuit,[2][5] and later to other devices that add force or power: a radio-frequency amplifier (1935), and in aeronautics an auxiliary engine or rocket that gives a missile its initial speed (1944).[2] In medicine a booster is a further dose that renews the effect of an earlier one, recorded from 1950.[2] A child's booster seat is recorded from 1956 and booster chair from 1957.[5] American slang used it for a casino employee who lures real players into betting (1901)[8] and for a shoplifter, from 1910 in Green's dictionary and 1912 in the OED.[8][2]

Timeline

  • 1885 – one who boosts or promotes something.[5]
  • 1890 – the OED's first record, in the Stock Grower.[2][4]
  • 1894 – an electrical device for raising the voltage in a circuit.[2][5]
  • 1901 – US slang, a casino employee who lures players.[8]
  • 1902 – boosterism.[5]
  • 1910 – US slang, a shoplifter.[8]
  • 1935 – a radio-frequency amplifier.[2]
  • 1944 – an auxiliary engine or rocket.[2]
  • 1950 – a booster dose.[2]
  • 1956 – booster seat.[5]

Meanings

Noun

  1. An enthusiastic supporter or promoter, as of a town, team or cause: She was the club's most tireless booster.[7][9][2]
  2. A person or thing that increases power or effectiveness.[9][7]
  3. The first stage of a multistage rocket, or an auxiliary engine or rocket that gives a missile its initial speed.[9][2]
  4. A device that increases voltage, signal strength or pressure, such as a radio-frequency amplifier or a pump.[9][7][2]
  5. A booster dose: a further dose of a drug or injection that renews or prolongs the effect of an earlier one.[9][2]
  6. (US slang) A shoplifter.[2][8][3]

Word family

  • boosterish
  • boosterism
  • booster cable
  • booster dose
  • booster seat
  • booster shot
  • solid rocket booster

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  4. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  5. ^ a b c d e f g h i j k Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b c Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  7. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  8. ^ a b c d e Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com
  9. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins
Cite this entry

“Booster.” Etymologically, 31 Oct. 2026, etymologically.com/en/booster. Accessed 31 Oct. 2026.

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