Which to use
“alt” is an adjective and “arc” is a noun - they look or sound alike but fill different roles in a sentence.
- #15,561
- “alt” frequency rank
- #3,180
- “arc” frequency rank
- 18741
- confusion score
Side-by-Side Comparison
| Feature | alt | arc |
|---|---|---|
| Definition | Vieux, vieille, âgé, âgée. | Arme de trait servant à lancer des flèches, formée d’une branche de bois ou d’une verge, soit de métal, soit d’autre matière, courbée avec effort au moyen d’une corde qui s’attache aux deux extrémités. |
Where the eye mixes alt and arc
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between alt and arc
These two trip readers on the page rather than in the ear: alt is \alt\ while arc is \aʁk\. 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 18741, derived from the frequency rank of both members and their visual similarity.
alt is recorded at frequency rank #15,561, classified as anadj, pronounced \alt\. arc is at rank #3,180, tagged as anoun, pronounced \aʁk\.
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 18741, this pair ranks #376,818 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of alt vs arc
Shared letters: a. Private to "alt": lt. Private to "arc": cr.
"alt" · 3 letters · shape VCC · "arc" · 3 letters · shape VCC
Frequently Asked Questions
Can "alt" and "arc" be used interchangeably?
Which is more common, "alt" or "arc"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "alt" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arc" - compare definitions side by side with the headword page. Word entry
- This pair ranks #376,818 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "alt" and "arc" also get mixed up with nearby pairs, the highest-scored neighbour is "alt vs aur". Nearby pair
Confusion rank #376,818 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.