Etymology

lethally

L1E1T1H4A1L1L1Y4

Today it means: In a lethal manner, in manner which is or will be fatal. Full definition →

Proto-Germanic *līką ← Proto-Indo-European *leyg- ← English lethal
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The story

  1. Englishlethal
  2. Proto-Indo-European*leyg-
  3. Proto-Germanic*līką
  4. English todaylethally

From lethal + -ly.

Etymology from Wiktionary, CC BY-SA 4.0.