fidèlevsfidesWhich spelling fits?

Quick tell: fidèle is a adjective, fides is a noun, so they fill different roles in a sentence.

Which to use

“fidèle” is an adjective and “fides” is a noun - they look or sound alike but fill different roles in a sentence.

#3,138
“fidèle” frequency rank
#38,296
“fides” frequency rank
41434
confusion score

Side-by-Side Comparison

Feature fidèle fides
Definition Qui garde sa foi, à l’égard d’une personne ou d’une idée, qui est constant dans les affections, qui remplit ses devoirs, ses engagements. Foi, croyance, confiance, créance, crédit.

Letter map: fidèle vs fides

Shared letters muted; letters that set fidèle and fides apart highlighted. Shared run: 4. fidèle runs 6 letters (CVCVCV) against fides's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
fidèle
5 ch
fides

Role in the sentence - fidèle and fides

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fidèle is anadjective and fidesanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 41434, derived from the frequency rank of both members and their visual similarity.

fidèle is recorded at frequency rank #3,138, classified as anadj, pronounced \fi.dɛl\. fides is at rank #38,296, tagged as anoun.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 41434, this pair ranks #233,122 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fidèle vs fides

Shared letters: defi. Private to "fidèle": lè. Private to "fides": s.

"fidèle" · 6 letters · shape CVCVCV  ·  "fides" · 5 letters · shape CVCVC

Known mistypes of this pair

  • fides ← fdies · ffides · fiddes · fidess · fidse · fieds · ifdes

Frequently Asked Questions

Do "fidèle" and "fides" mean the same thing in a sentence?
No - they are not even the same part of speech. "fidèle" is an adjective and "fides" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fidèle" or "fides"?
"fidèle" is the more common of the two: it sits at frequency rank #3,138 in our French list, against #38,296 for "fides". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

You've compared "fidèle" and "fides". Here's where to go from here.

  • Full dictionary entry for "fidèle" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fides" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #233,122 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fidèle" and "fides" also get mixed up with nearby pairs, the highest-scored neighbour is "fides vs filez". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #233,122 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list