fidelis

adj

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“fidelis” is uncommon French (frequency #85,720 among 137,178 “F” headwords), classed as an adjective. The kind of spelling people second-guess.

#85,720
frequency rank, French
137,178
“F” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Digne de confiance, fidèle, sûr, solide, loyal, sincère.

Key facts for fidelis
PropertyValue
Headwordfidelis
LanguageFrench
Part of speechAdjective
Letters7
Frequency rank#85,720
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “fidelis” sits in French frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). fidelis lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

fidelis is uncommon French at frequency #85,720 among 137,178 “F” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 3 senses are on record.

No misspelling variants are generated for fidelis in our index, since its letter sequence doesn't invite the usual edit-distance slips. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

This headword's origin isn't recorded in our source data, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct French form is fidelis, spelled F-I-D-E-L-I-S.

Definition

  1. 1
    Digne de confiance, fidèle, sûr, solide, loyal, sincère.
  2. 2
    Fidèle en amitié, ami, amical, affectueux.
  3. 3
    Qui inspire confiance, véritable, solide, ferme.

Antonyms

infidelis

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "fidelis"?
"fidelis" is spelled F-I-D-E-L-I-S.
What does "fidelis" mean?
As an adjective, "fidelis" means: Digne de confiance, fidèle, sûr, solide, loyal, sincère.
What language does "fidelis" come from?
"fidelis" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “fidelis”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct French spelling is F-I-D-E-L-I-S - every other letter order is a misspelling in standard orthography.
  • Browse more French words and confusable pairs in the same reference. French words

Other uncommon French words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list