fidèlevsfioleWhat's the difference?

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

Which to use

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

#3,138
“fidèle” frequency rank
#33,686
“fiole” frequency rank
36824
confusion score

Side-by-Side Comparison

Feature fidèle fiole
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. Petit flacon ou petite bouteille de verre à col étroit.

Where the eye mixes fidèle and fiole

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. fidèle runs 6 letters (CVCVCV) against fiole's 5 (CVVCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
fidèle
5 ch
fiole

Why the eye confuses fidèle with fiole

These two trip readers on the page rather than in the ear: fidèle is \fi.dɛl\ while fiole is \fjɔl\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 36824, 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\. fiole is at rank #33,686, tagged as anoun, pronounced \fjɔl\.

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 36824, this pair ranks #266,896 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fidèle vs fiole

Shared letters: efil. Private to "fidèle": dè. Private to "fiole": o.

"fidèle" · 6 letters · shape CVCVCV  ·  "fiole" · 5 letters · shape CVVCV

Known mistypes of this pair

  • fiole ← ffiole · filoe · fioel · fiolle · ifole

Frequently Asked Questions

Is swapping "fidèle" for "fiole" ever safe?
No - they are not even the same part of speech. "fidèle" is an adjective and "fiole" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "fidèle" vs "fiole" - which ranks higher?
"fidèle" is the more common of the two: it sits at frequency rank #3,138 in our French list, against #33,686 for "fiole". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "fidèle" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fiole" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #266,896 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fidèle" and "fiole" also get mixed up with nearby pairs, the highest-scored neighbour is "filez vs fiole". 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 #266,896 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