securevssureTell them apart

Which to use

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

#40,492
“secure” frequency rank
#8,164
“sure” frequency rank
48656
confusion score

Side-by-Side Comparison

Feature secure sure
Definition Sécurisé, sûr. Féminin singulier de sur : qui a un goût acide et aigrelet.

Where the eye mixes secure and sure

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
secure
4 ch
sure

Visual trap between secure and sure

A purely visual mix-up. secure (\sɪ.ˈkjʊə(ɹ)\) and sure (\syʁ\) 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 2 letter(s) in length. Our composite confusion score for this pair is 48656, derived from the frequency rank of both members and their visual similarity.

secure is recorded at frequency rank #40,492, classified as anadj, pronounced \sɪ.ˈkjʊə(ɹ)\. sure is at rank #8,164, tagged as anadj, pronounced \syʁ\.

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 48656, this pair ranks #177,083 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of secure vs sure

Shared letters: ersu. Private to "secure": c. Private to "sure": -.

"secure" · 6 letters · shape CVCVCV  ·  "sure" · 4 letters · shape CVCV

Known mistypes of this pair

  • secureescure · sceure · seccure · secrue · secuer · securre · seucre · ssecure
  • suresrue · ssure · surre · usre

Frequently Asked Questions

Is swapping "secure" for "sure" ever safe?
No. They are said differently (\sɪ.ˈkjʊə(ɹ)\ versus \syʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "secure" vs "sure" - which ranks higher?
"sure" is the more common of the two: it sits at frequency rank #8,164 in our French list, against #40,492 for "secure". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "secure" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sure" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #177,083 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "secure" and "sure" also get mixed up with nearby pairs, the highest-scored neighbour is "sciure vs secure". 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 #177,083 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