VipervsvoilerConfusable pair

Quick tell: Viper is a noun, voiler is a verb, so they fill different roles in a sentence.

Which to use

“Viper” is a noun and “voiler” is a verb - they look or sound alike but fill different roles in a sentence.

#44,257
“Viper” frequency rank
#21,812
“voiler” frequency rank
66069
confusion score

Side-by-Side Comparison

Feature Viper voiler
Definition Vipère. Couvrir d’un voile.

Where the eye mixes Viper and voiler

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. Viper runs 5 letters (CVCVC) against voiler's 6 (CVVCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
Viper
6 ch
voiler

Why the eye confuses Viper with voiler

These two trip readers on the page rather than in the ear: Viper is \ˈviːpɐ\ while voiler is \vwa.le\. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 66069, derived from the frequency rank of both members and their visual similarity.

Viper is recorded at frequency rank #44,257, classified as anoun, pronounced \ˈviːpɐ\. voiler is at rank #21,812, tagged as averb, pronounced \vwa.le\.

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 66069, this pair ranks #69,474 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of Viper vs voiler

Shared letters: eirv. Private to "Viper": p. Private to "voiler": lo.

"Viper" · 5 letters · shape CVCVC  ·  "voiler" · 6 letters · shape CVVCVC

Known mistypes of this pair

  • Viper ← ivper · viepr · viperr · vipper · vipre · vpier · vviper
  • voiler ← oviler · voielr · voilerr · voiller · voilre · volier · vvoiler

Frequently Asked Questions

Do "Viper" and "voiler" mean the same thing in a sentence?
No - they are not even the same part of speech. "Viper" is a noun and "voiler" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "Viper" or "voiler" show up more?
"voiler" is the more common of the two: it sits at frequency rank #21,812 in our French list, against #44,257 for "Viper". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "Viper" and "voiler" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "Viper" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "voiler" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #69,474 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Viper" and "voiler" also get mixed up with nearby pairs, the highest-scored neighbour is "vilar vs Viper". 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 #69,474 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