Etymology

February

Feb·ru·ary
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Today it means: The short month following January and preceding March in the Roman, Julian, and Gregorian calendars, used in all three calendars for intercalation or addition of leap days. Full definition →

Middle English Februarie ← Latin Februārius ← Proto-Indo-European *dʰegʷʰ-
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The story

  1. Proto-Indo-European*dʰegʷʰ-
  2. Latinfebruum
  3. LatinFebrua
  4. LatinFebruārius
  5. Middle EnglishFebruarie
  6. English todayFebruary

From Middle English Februarie, februari, februare, from Latin Februārius (“the month of the Februa”), from Februa (“the Purgings, the Purifications”), a Roman holiday two days after its ides (i.e., Feb. 15), + -arius (“-ary: forming adjectives”). Februa from februum (“purging”), from an earlier Sabine [Term?] word, possibly from Proto-Indo-European *dʰewh₂- (“smoke, haze”) and thus cognate with thio- (“sulfurous”) and Ancient Greek θεῖον (theîon, “sulfur”) or from Proto-Indo-European *dʰegʷʰris, an extension of the root *dʰegʷʰ- (“to burn”) and thus cognate with fever and febris. A relatinization abandoning Middle English feoverel, from Old French feverier, which itself displaced Old English solmōnaþ (“mud month”).

Words from the same roots

LatinFebruārius all →

Proto-Indo-European*dʰewh₂- all →

downduststeamdyedewdavenportdunduvetdownrightdweomerfuribund

Ancient Greekθεῖον all →

thio-thion hudor

Etymology from Wiktionary, CC BY-SA 4.0.