protégévsprothèseWhich spelling fits?

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

Which to use

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

#5,172
“protégé” frequency rank
#20,531
“prothèse” frequency rank
25703
confusion score

Side-by-Side Comparison

Feature protégé prothèse
Definition En parlant des choses, mis à l’abri. Appareil servant à remplacer un organe ou un membre.

Where the eye mixes protégé and prothèse

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

7 ch
protégé
8 ch
prothèse

Why the eye confuses protégé with prothèse

These two trip readers on the page rather than in the ear: protégé is \pʁɔ.te.ʒe\ while prothèse is \pʁɔ.tɛz\. 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 25703, derived from the frequency rank of both members and their visual similarity.

protégé is recorded at frequency rank #5,172, classified as anadj, pronounced \pʁɔ.te.ʒe\. prothèse is at rank #20,531, tagged as anoun, pronounced \pʁɔ.tɛz\.

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 25703, this pair ranks #339,353 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of protégé vs prothèse

Shared letters: oprt. Private to "protégé": . Private to "prothèse": ehsè.

"protégé" · 7 letters · shape CCVCVCV  ·  "prothèse" · 8 letters · shape CCVCCVCV

Frequently Asked Questions

Can "protégé" and "prothèse" be used interchangeably?
No - they are not even the same part of speech. "protégé" is an adjective and "prothèse" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "protégé" or "prothèse"?
"protégé" is the more common of the two: it sits at frequency rank #5,172 in our French list, against #20,531 for "prothèse". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "protégé" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "prothèse" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #339,353 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "protégé" and "prothèse" also get mixed up with nearby pairs, the highest-scored neighbour is "protect vs protégé". Nearby pair

Confusion rank #339,353 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