Etymology

unthink

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Today it means: To undo the process of thinking. Full definition →

English think ← Middle English thinken ← Old English þenċan
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The story

  1. Englishun-
  2. Proto-Indo-European*teng-
  3. Proto-Germanic*þankijaną
  4. Proto-West Germanic*þankijan
  5. Old Englishþenċan
  6. Middle Englishthinken
  7. Englishthink
  8. English todayunthink

From un- + think.

Etymology from Wiktionary, CC BY-SA 4.0.