Etymology

obsessively

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Today it means: In an obsessive manner. Full definition →

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

  1. Englishobsess
  2. Englishobsessive
  3. Proto-Indo-European*leyg-
  4. Proto-Germanic*līką
  5. English todayobsessively

From obsessive + -ly.

Etymology from Wiktionary, CC BY-SA 4.0.