Which to use
“fen” and “feu” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #35,717
- “fen” frequency rank
- #43,641
- “feu” frequency rank
- 79358
- confusion score
Side-by-Side Comparison
| Feature | fen | feu |
|---|---|---|
| Definition | A type of wetland fed by ground water and runoff, containing peat below the waterline, characteristically alkaline. | Land held in feudal tenure. |
Where the eye mixes fen and feu
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. fen (CVC) and feu (CVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses fen with feu
A purely visual mix-up. fen (/fɛn/) and feu (/fjuː/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - n in “fen” becomes u in “feu”. Our composite confusion score for this pair is 79358, derived from the frequency rank of both members and their visual similarity.
fen is recorded at frequency rank #35,717, classified as anoun, pronounced /fɛn/. feu is at rank #43,641, tagged as anoun, pronounced /fjuː/.
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 79358, this pair ranks #22,291 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of fen vs feu
Shared letters: ef. Private to "fen": n. Private to "feu": u.
"fen" · 3 letters · shape CVC · "feu" · 3 letters · shape CVV
Frequently Asked Questions
Do "fen" and "feu" mean the same thing in a sentence?
Frequency check: "fen" vs "feu" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "fen" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "feu" - compare definitions side by side with the headword page. Word entry
- This pair ranks #22,291 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fen" and "feu" also get mixed up with nearby pairs, the highest-scored neighbour is "feu vs foh". Nearby pair
Confusion rank #22,291 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.