Etymology

spurious

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Today it means: False, not authentic, not genuine. Full definition →

Late Latin spurius
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The story

  1. Late Latin · borrowed fromspurius“illegitimate, bastardly”
  2. English todayspurious

Borrowed from Late Latin spurius (“illegitimate, bastardly”), possibly related to sperno or from Etruscan.

Etymology from Wiktionary, CC BY-SA 4.0.