testvstosConfusable pair

Which to use

“test” and “tos” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#1,724
“test” frequency rank
#48,234
“tos” frequency rank
49958
confusion score

Side-by-Side Comparison

Feature test tos
Definition Coquille externe dure, calcaire ou chitineuse, de certains invertébrés. Élève de première année à l’École polytechnique.

Where the eye mixes test and tos

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

4 ch
test
3 ch
tos

Look-alike desk: test vs tos

A purely visual mix-up. test (\tɛst\) and tos (\tos\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 49958, derived from the frequency rank of both members and their visual similarity.

test is recorded at frequency rank #1,724, classified as anoun, pronounced \tɛst\. tos is at rank #48,234, tagged as anoun, pronounced \tos\.

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 49958, this pair ranks #166,483 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of test vs tos

Shared letters: st. Private to "test": e. Private to "tos": o.

"test" · 4 letters · shape CVCC  ·  "tos" · 3 letters · shape CVC

Known mistypes of this pair

  • testetst · tesst · testt · tets · tset · ttest

Frequently Asked Questions

Can "test" and "tos" be used interchangeably?
No. They are said differently (\tɛst\ versus \tos\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "test" or "tos" show up more?
"test" is the more common of the two: it sits at frequency rank #1,724 in our French list, against #48,234 for "tos". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "test" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #166,483 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "test" and "tos" also get mixed up with nearby pairs, the highest-scored neighbour is "tif vs tos". 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 #166,483 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