défisvsdélaisWhich spelling fits?

Which to use

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

#5,971
“défis” frequency rank
#5,551
“délais” frequency rank
11522
confusion score

Side-by-Side Comparison

Feature défis délais
Definition Pluriel de défi. Pluriel de délai.

Where the eye mixes défis and délais

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

5 ch
défis
6 ch
délais

Look-alike desk: défis vs délais

A purely visual mix-up. défis (\de.fi\) and délais (\de.lɛ\) 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 11522, derived from the frequency rank of both members and their visual similarity.

défis is recorded at frequency rank #5,971, classified as anoun, pronounced \de.fi\. délais is at rank #5,551, tagged as anoun, pronounced \de.lɛ\.

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 11522, this pair ranks #408,839 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of défis vs délais

Shared letters: disé. Private to "défis": f. Private to "délais": al.

"défis" · 5 letters · shape CVCVC  ·  "délais" · 6 letters · shape CVCVVC

Frequently Asked Questions

Do "défis" and "délais" mean the same thing in a sentence?
No. They are said differently (\de.fi\ versus \de.lɛ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "défis" vs "délais" - which ranks higher?
"délais" is the more common of the two: it sits at frequency rank #5,551 in our French list, against #5,971 for "défis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "défis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "délais" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #408,839 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "défis" and "délais" also get mixed up with nearby pairs, the highest-scored neighbour is "défis vs denim". Nearby pair

Confusion rank #408,839 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