testsvsthèsesWhich spelling fits?

Which to use

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

#2,968
“tests” frequency rank
#10,958
“thèses” frequency rank
13926
confusion score

Side-by-Side Comparison

Feature tests thèses
Definition Pluriel de test. Pluriel de thèse.

Where the eye mixes tests and thèses

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
tests
6 ch
thèses

Why the eye confuses tests with thèses

A purely visual mix-up. tests (\tɛst\) and thèses (\tɛz\) 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 13926, derived from the frequency rank of both members and their visual similarity.

tests is recorded at frequency rank #2,968, classified as anoun, pronounced \tɛst\. thèses is at rank #10,958, tagged as anoun, pronounced \tɛz\.

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 13926, this pair ranks #398,926 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of tests vs thèses

Shared letters: est. Private to "tests": -. Private to "thèses": .

"tests" · 5 letters · shape CVCCC  ·  "thèses" · 6 letters · shape CCVCVC

Known mistypes of this pair

  • testsetsts · tessts · testss · testts · tetss · tsets · ttests

Frequently Asked Questions

Can "tests" and "thèses" be used interchangeably?
No. They are said differently (\tɛst\ versus \tɛz\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "tests" or "thèses"?
"tests" is the more common of the two: it sits at frequency rank #2,968 in our French list, against #10,958 for "thèses". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "tests" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "thèses" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #398,926 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "tests" and "thèses" also get mixed up with nearby pairs, the highest-scored neighbour is "thèses vs tissés". 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 #398,926 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