Which to use
“endured” and “ensure” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #13,336
- “endured” frequency rank
- #2,039
- “ensure” frequency rank
- 15375
- confusion score
Side-by-Side Comparison
| Feature | endured | ensure |
|---|---|---|
| Definition | simple past and past participle of endure | To make sure or certain of something (usually some future event or condition). |
Where the eye mixes endured and ensure
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. endured runs 7 letters (VCCVCVC) against ensure's 6 (VCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses endured with ensure
A purely visual mix-up. endured (/ɪnˈdʊɹd/) and ensure (/ɪnˈʃɔː(ɹ)/) 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 15375, derived from the frequency rank of both members and their visual similarity.
endured is recorded at frequency rank #13,336, classified as averb, pronounced /ɪnˈdʊɹd/. ensure is at rank #2,039, tagged as averb, pronounced /ɪnˈʃɔː(ɹ)/.
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 15375, this pair ranks #464,317 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of endured vs ensure
Shared letters: enru. Private to "endured": d. Private to "ensure": s.
"endured" · 7 letters · shape VCCVCVC · "ensure" · 6 letters · shape VCCVCV
Known mistypes of this pair
Frequently Asked Questions
Do "endured" and "ensure" mean the same thing in a sentence?
In ordinary English text, does "endured" or "ensure" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "endured" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ensure" - compare definitions side by side with the headword page. Word entry
- This pair ranks #464,317 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "endured" and "ensure" also get mixed up with nearby pairs, the highest-scored neighbour is "endeared vs endured". 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 #464,317 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.