fortisvsfrottisTell them apart

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

Which to use

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

#46,179
“fortis” frequency rank
#43,954
“frottis” frequency rank
90133
confusion score

Side-by-Side Comparison

Feature fortis frottis
Definition Fort, robuste, solide, vigoureux, bien portant. Synonyme de frottement.

Letter map: fortis vs frottis

Shared letters muted; letters that set fortis and frottis apart highlighted. Shared run: 5. fortis runs 6 letters (CVCCVC) against frottis's 7 (CCVCCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
fortis
7 ch
frottis

Part-of-speech tell for fortis / frottis

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fortis is anadjective and frottisanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 90133, derived from the frequency rank of both members and their visual similarity.

fortis is recorded at frequency rank #46,179, classified as anadj. frottis is at rank #43,954, tagged as anoun, pronounced \fʁɔ.ti\.

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 90133, this pair ranks #5,114 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of fortis vs frottis

Shared letters: fiorst. Private to "fortis": -. Private to "frottis": -.

"fortis" · 6 letters · shape CVCCVC  ·  "frottis" · 7 letters · shape CCVCCVC

Known mistypes of this pair

  • fortis ← ffortis · forits · forrtis · fortiss · fortsi · fotris · ofrtis
  • frottis ← ffrottis · forttis · frotis · frotits · frottiss · frottsi · frrottis · frtotis

Frequently Asked Questions

Can "fortis" and "frottis" be used interchangeably?
No - they are not even the same part of speech. "fortis" is an adjective and "frottis" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "fortis" vs "frottis" - which ranks higher?
"frottis" is the more common of the two: it sits at frequency rank #43,954 in our French list, against #46,179 for "fortis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "fortis" vs "frottis" is on the table, pick a follow-up below.

  • Full dictionary entry for "fortis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "frottis" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #5,114 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fortis" and "frottis" also get mixed up with nearby pairs, the highest-scored neighbour is "fortis vs furtifs". 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 #5,114 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