The story
- Proto-Indo-European*ís?
- Proto-Indo-European*h₁óynos
- Proto-Italic*oinos
- Proto-Italic*noinolos
- Latinnūllus
- Old Frenchnul
- Middle Frenchnu
- Englishnull
- Englishnulli-
- Proto-Indo-European*bʰeydʰ-
- Latinfidēs
- 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 →
Proto-Indo-European*bʰeydʰ- all →
Etymology from Wiktionary, CC BY-SA 4.0.