Etymology

between

be·tween
B3E1T1W4E1E1N1

Today it means: In the position or interval that separates (two things), or intermediate in quantity or degree. (See Usage notes below.) Full definition →

Middle English betwene ← Old English betwēonum ← Proto-Germanic *bi-
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The story

  1. Proto-Germanic · derived from*bi-“be-”
  2. Old English · inherited frombetwēonum“between, among”
  3. Middle English · inherited frombetwene
  4. English todaybetween

PIE word *dwóh₁ From Middle English betwene, from Old English betwēonum (“between, among”, dative plural, literally “by the two, near both”), from Proto-Germanic *bi- (“be-”) + *twīhnaz (“two each”), corresponding to be- + twain. Cognate with Scots between (“between”), Scots atween (“between”), Gothic 𐍄𐍅𐌴𐌹𐌷𐌽𐌰𐌹 (tweihnai, “two each”), Old English betweoh (“between”), Old English twinn (“double, twofold”). More at betwixt, twin. More distantly related to Ancient Greek διά (diá, “through, across, by, over”) whence English dia- (“through, across, between”). For the meaning development also compare with Mongolian хооронд (xoorond, “between”), connected with Mongolian хоёр (xojor, “two”).

Words from the same roots

Proto-Germanic*bi- all →

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Etymology from Wiktionary, CC BY-SA 4.0.