Etymology

nullifidian

null·i·fid·i·an
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Today it means: Synonym of atheist (“a person who does not believe in deities or gods”). Full definition →

Latin fidēs ← Proto-Indo-European *bʰeydʰ- ← English nulli-
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The story

  1. Proto-Indo-European*ís?
  2. Proto-Indo-European*h₁óynos
  3. Proto-Italic*oinos
  4. Proto-Italic*noinolos
  5. Latinnūllus
  6. Old Frenchnul
  7. Middle Frenchnu
  8. Englishnull
  9. Englishnulli-
  10. Proto-Indo-European*bʰeydʰ-
  11. Latinfidēs
  12. English todaynullifidian

From nulli- (prefix meaning ‘null; no’) + Latin fidēs (“belief, faith”) + English -ian (suffix meaning ‘one belonging to, from, like, or relating to’, forming nouns; and ‘from, like, or related to’ forming adjectives) (compare Late Latin nullifidius (“infidel”)): * Nulli- is derived from Latin nūllus (“not any”), ultimately from Proto-Indo-European *h₁óynos, *óynos (“one; single”). * Fidēs is from Proto-Indo-European *bʰeydʰ- (“to convince; to trust”).

Words from the same roots

Latinnūllus all →

nullnullitynulligestnullipore

Proto-Indo-European*bʰeydʰ- all →

affidavitbodeaffy

Etymology from Wiktionary, CC BY-SA 4.0.