fortesvsfortressWhich spelling fits?

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

Which to use

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

#2,927
“fortes” frequency rank
#43,949
“fortress” frequency rank
46876
confusion score

Side-by-Side Comparison

Feature fortes fortress
Definition Féminin pluriel de fort. Forteresse, bastille.

Where the eye mixes fortes and fortress

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. fortes runs 6 letters (CVCCVC) against fortress's 8 (CVCCCVCC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
fortes
8 ch
fortress

Look-alike desk: fortes vs fortress

These two trip readers on the page rather than in the ear: fortes is \fɔʁt\ while fortress is \ˈfɔɹ.tɹɪs\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 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 46876, derived from the frequency rank of both members and their visual similarity.

fortes is recorded at frequency rank #2,927, classified as anadj, pronounced \fɔʁt\. fortress is at rank #43,949, tagged as anoun, pronounced \ˈfɔɹ.tɹɪs\.

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 46876, this pair ranks #191,355 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fortes vs fortress

Shared letters: eforst. Private to "fortes": -. Private to "fortress": -.

"fortes" · 6 letters · shape CVCCVC  ·  "fortress" · 8 letters · shape CVCCCVCC

Known mistypes of this pair

  • fortes ← ffortes · forrtes · fortess · fortse · forttes · fotres · frotes · ofrtes
  • fortress ← ffortress · forrtess · forrtress · forterss · fortres · fortrress · fortrses · forttress

Frequently Asked Questions

Is swapping "fortes" for "fortress" ever safe?
No - they are not even the same part of speech. "fortes" is an adjective and "fortress" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "fortes" vs "fortress" - which ranks higher?
"fortes" is the more common of the two: it sits at frequency rank #2,927 in our French list, against #43,949 for "fortress". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "fortes" and "fortress" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "fortes" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fortress" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #191,355 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fortes" and "fortress" also get mixed up with nearby pairs, the highest-scored neighbour is "Forrest vs fortress". 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 #191,355 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