Which to use
“forties” and “fortress” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #27,467
- “forties” frequency rank
- #10,051
- “fortress” frequency rank
- 37518
- confusion score
Side-by-Side Comparison
| Feature | forties | fortress |
|---|---|---|
| Definition | The fifth decade of a century: the 1840s, 1940s, 2040s, etc. | A fortified place; a large and permanent fortification, sometimes including a town; for example a fort, a castle; a stronghold; a place of defense or security. |
Letter map: forties vs fortress
Shared letters muted; letters that set forties and fortress apart highlighted. Shared run: 6. forties runs 7 letters (CVCCVVC) against fortress's 8 (CVCCCVCC) - the length gap alone is often enough to separate them once you know to check it.
Spelling & dictionary notes on forties vs fortress
forties and fortress are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37518, derived from the frequency rank of both members and their visual similarity.
forties is recorded at frequency rank #27,467, classified as anoun. fortress is at rank #10,051, tagged as anoun, pronounced /ˈfoɹ.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 37518, this pair ranks #293,880 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of forties vs fortress
Shared letters: eforst. Private to "forties": i. Private to "fortress": -.
"forties" · 7 letters · shape CVCCVVC · "fortress" · 8 letters · shape CVCCCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "forties" and "fortress" be used interchangeably?
Frequency check: "forties" vs "fortress" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "forties" and "fortress".
- Full dictionary entry for "forties" 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 #293,880 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "forties" and "fortress" also get mixed up with nearby pairs, the highest-scored neighbour is "forties vs fortify". 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 #293,880 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.