Which to use
“extension” is a noun and “extenso” is an adjective - they look or sound alike but fill different roles in a sentence.
- #32,661
- “extension” frequency rank
- #7,718
- “extenso” frequency rank
- 40379
- confusion score
Side-by-Side Comparison
| Feature | extension | extenso |
|---|---|---|
| Definition | Extensión. | que tiene extensión |
Where the eye mixes extension and extenso
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. extension runs 9 letters (VCCVCCVVC) against extenso's 7 (VCCVCCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: extension vs extenso
These two trip readers on the page rather than in the ear: extension is [ɛk.stɑ̃.sjɔ̃] while extenso is [eksˈt̪ẽnso]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 40379, derived from the frequency rank of both members and their visual similarity.
extension is recorded at frequency rank #32,661, classified as anoun, pronounced [ɛk.stɑ̃.sjɔ̃]. extenso is at rank #7,718, tagged as anadj, pronounced [eksˈt̪ẽnso].
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 40379, this pair ranks #159,420 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of extension vs extenso
Shared letters: enostx. Private to "extension": i. Private to "extenso": -.
"extension" · 9 letters · shape VCCVCCVVC · "extenso" · 7 letters · shape VCCVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "extension" and "extenso" be used interchangeably?
Which is more common, "extension" or "extenso"?
After this comparison
Eye-level mix-up between "extension" and "extenso" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "extension" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "extenso" - compare definitions side by side with the headword page. Word entry
- This pair ranks #159,420 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "extension" and "extenso" also get mixed up with nearby pairs, the highest-scored neighbour is "extendían vs extension". 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 #159,420 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.