Etymology

suicidal

su·i·ci·dal
S1U1I1C3I1D2A1L1

Today it means: Pertaining to suicide. Full definition →

Proto-Indo-European *h₂élisder.? ← English suicide
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The story

  1. Englishsuicide
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. English todaysuicidal

From suicide + -al.

Etymology from Wiktionary, CC BY-SA 4.0.