fidelis

Latin edit

From fidēs (“faith, trust”) +‎ -ēlis.

fidēlis (neuter fidēle, comparative fidēlior, superlative fidēlissimus, adverb fidēliter); third-declension two-termination adjective

Third-declension two-termination adjective.

Case / Gender	Masc./Fem.	Neuter	Masc./Fem.	Neuter
Number	Singular		Plural
Nominative	fidēlis	fidēle	fidēlēs	fidēlia
Genitive	fidēlis		fidēlium
Dative	fidēlī		fidēlibus
Accusative	fidēlem	fidēle	fidēlēs fidēlīs	fidēlia
Ablative	fidēlī		fidēlibus
Vocative	fidēlis	fidēle	fidēlēs	fidēlia

Italo-Romance;
- Italian: fedele
  - → Ladin: fedel
  - → Sicilian: fideli
North Italian:
- Friulian: fidêl
Gallo-Romance:
- Old French: feel, feal, feau, feeil, fial, fiel; fedeil, fetheil (early fedeil)
  - Middle French: feal, fieu, foial
    - French: féal
  - → Early Scots: feal, feale, feall
    - Middle Scots: feall, fiall
      - Scots: feal, feele (obsolete)
      - → English: feal
Occitano-Romance:
- Old Catalan: feel
- Old Occitan: fezel
  - Occitan: fidèl, fisèl
West Iberian:
- Navarro-Aragonese: *feel, *fedel
  - Aragonese: fel, fiel, hiel, yel
- Old Spanish: fiel, hiel, פִֿײֵאל
  - Spanish: fiel
- Old Leonese: *fiel
  - Asturian: fiel
- Old Galician-Portuguese: fiel
  - Galician: fiel
  - Portuguese: fiel
Insular Romance:
- Sardinian: fidele, fideli, fieli
Borrowings:
- → Catalan: fidel
- → French: fidèle
  - → Romanian: fidel
- → Romansch: fidel

fidēlis m (genitive fidēlis); third declension

“fidelis”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
“fidelis”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
fidelis in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
fidelis in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.