Etymology

auxiliary

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Today it means: Helping; giving assistance or support. Full definition →

Latin auxiliārius
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The story

  1. Latin · derived fromauxiliārius“assistant, ally”
  2. English todayauxiliary

From Latin auxiliārius (“assistant, ally”), equiv. to auxiliāris (“helping, aiding”), from auxilium (“help, aid”), from augēre (“to increase”).

Etymology from Wiktionary, CC BY-SA 4.0.