vainvsvasTell them apart

Quick tell: vain is a adjective, vas is a verb, so they fill different roles in a sentence.

Which to use

“vain” is an adjective and “vas” is a verb - they look or sound alike but fill different roles in a sentence.

#6,447
“vain” frequency rank
#593
“vas” frequency rank
7040
confusion score

Side-by-Side Comparison

Feature vain vas
Definition Qui est inutile, qui ne produit rien. Deuxième personne du singulier de l’indicatif présent de aller.

Where the eye mixes vain and vas

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
vain
3 ch
vas

Visual trap between vain and vas

These two trip readers on the page rather than in the ear: vain is \vɛ̃\ while vas is \va\. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 7040, derived from the frequency rank of both members and their visual similarity.

vain is recorded at frequency rank #6,447, classified as anadj, pronounced \vɛ̃\. vas is at rank #593, tagged as averb, pronounced \va\.

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 7040, this pair ranks #424,444 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of vain vs vas

Shared letters: av. Private to "vain": in. Private to "vas": s.

"vain" · 4 letters · shape CVVC  ·  "vas" · 3 letters · shape CVC

Known mistypes of this pair

  • vainavin · vainn · vani · vvain

Frequently Asked Questions

Is swapping "vain" for "vas" ever safe?
No - they are not even the same part of speech. "vain" is an adjective and "vas" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "vain" or "vas"?
"vas" is the more common of the two: it sits at frequency rank #593 in our French list, against #6,447 for "vain". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "vain" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "vas" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #424,444 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "vain" and "vas" also get mixed up with nearby pairs, the highest-scored neighbour is "vain 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 #424,444 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list