Which to use
“arch” is a noun and “arf” is an intj - they look or sound alike but fill different roles in a sentence.
- #25,204
- “arch” frequency rank
- #24,862
- “arf” frequency rank
- 50066
- confusion score
Side-by-Side Comparison
| Feature | arch | arf |
|---|---|---|
| Definition | Dans les pays arabes, terre en usufruit collectif chez les peuples Berbères. | Hé ! |
Where the eye mixes arch and arf
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: arch vs arf
These two trip readers on the page rather than in the ear: arch is \aʁʃ\ while arf is \aʁf\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs intj), which is usually the fastest check. Our composite confusion score for this pair is 50066, derived from the frequency rank of both members and their visual similarity.
arch is recorded at frequency rank #25,204, classified as anoun, pronounced \aʁʃ\. arf is at rank #24,862, tagged as anintj, pronounced \aʁf\.
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 50066, this pair ranks #165,573 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of arch vs arf
Shared letters: ar. Private to "arch": ch. Private to "arf": f.
"arch" · 4 letters · shape VCCC · "arf" · 3 letters · shape VCC
Known mistypes of this pair
- arch ← acrh · arcch · archh · arhc · arrch · rach
Frequently Asked Questions
Is swapping "arch" for "arf" ever safe?
Frequency check: "arch" vs "arf" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "arch" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arf" - compare definitions side by side with the headword page. Word entry
- This pair ranks #165,573 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "arch" and "arf" also get mixed up with nearby pairs, the highest-scored neighbour is "arch vs arti". 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 #165,573 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.