Which to use
“vai” is a conjunction and “vais” is a verb - they look or sound alike but fill different roles in a sentence.
- #45,367
- “vai” frequency rank
- #219
- “vais” frequency rank
- 45586
- confusion score
Side-by-Side Comparison
| Feature | vai | vais |
|---|---|---|
| Definition | Ou, ou bien. | Première personne du singulier de l’indicatif présent de aller. |
Where the eye mixes vai and vais
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. vai runs 3 letters (CVV) against vais's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between vai and vais
These two trip readers on the page rather than in the ear: vai is \ʋɑi̯\ while vais is \vɛ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “vai” sits inside “vais”, and the parts of speech differ too (conjunction vs verb), which is usually the fastest check. Our composite confusion score for this pair is 45586, derived from the frequency rank of both members and their visual similarity.
vai is recorded at frequency rank #45,367, classified as aconj, pronounced \ʋɑi̯\. vais is at rank #219, tagged as averb, pronounced \vɛ\.
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 45586, this pair ranks #201,583 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of vai vs vais
Shared letters: aiv. Private to "vai": -. Private to "vais": s.
"vai" · 3 letters · shape CVV · "vais" · 4 letters · shape CVVC
Known mistypes of this pair
- vais ← vaiss · vasi · vias · vvais
Frequently Asked Questions
Can "vai" and "vais" be used interchangeably?
Which is more common, "vai" or "vais"?
After this comparison
Eye-level mix-up between "vai" and "vais" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "vai" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "vais" - compare definitions side by side with the headword page. Word entry
- This pair ranks #201,583 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "vai" and "vais" also get mixed up with nearby pairs, the highest-scored neighbour is "vai vs vlan". 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 #201,583 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.