fortvsfourWhat's the difference?

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

Which to use

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

#380
“fort” frequency rank
#4,150
“four” frequency rank
4530
confusion score

Side-by-Side Comparison

Feature fort four
Definition Costaud, robuste, vigoureux. (radiotéléphonie) Mot de code radiotéléphonique de l'OACI, OTAN et SIA pour le chiffre 4.

Where the eye mixes fort and four

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
fort
4 ch
four

Why the eye confuses fort with four

These two trip readers on the page rather than in the ear: fort is \fɔʁ\ while four is \ˈfoa\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 4530, derived from the frequency rank of both members and their visual similarity.

fort is recorded at frequency rank #380, classified as anadj, pronounced \fɔʁ\. four is at rank #4,150, tagged as anoun, pronounced \ˈfoa\.

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 4530, this pair ranks #431,374 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of fort vs four

Shared letters: for. Private to "fort": t. Private to "four": u.

"fort" · 4 letters · shape CVCC  ·  "four" · 4 letters · shape CVVC

Known mistypes of this pair

  • fortffort · forrt · fortt · fotr · frot · ofrt
  • fourffour · foru · fourr · fuor · ofur

Frequently Asked Questions

Do "fort" and "four" mean the same thing in a sentence?
No - they are not even the same part of speech. "fort" is an adjective and "four" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fort" or "four"?
"fort" is the more common of the two: it sits at frequency rank #380 in our French list, against #4,150 for "four". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "fort" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "four" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #431,374 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fort" and "four" also get mixed up with nearby pairs, the highest-scored neighbour is "four vs FPR". 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 #431,374 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