Etymology

hyporeactive

H4Y4P3O1R1E1A1C3T1I1V4E1

Today it means: Having or showing abnormally low sensitivity to stimuli. Full definition →

English reactive ← Ancient Greek ὑπο- (hupo-) ← Proto-Indo-European *upó
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The story

  1. Proto-Indo-European*upó
  2. Ancient Greekῠ̔πό (hŭpó)
  3. Ancient Greekὑπο- (hupo-)
  4. Englishhypo-
  5. Englishreactive
  6. English todayhyporeactive

From hypo- + reactive.

Etymology from Wiktionary, CC BY-SA 4.0.