Which to use
“extension” is a noun and “extensivo” is an adjective - they look or sound alike but fill different roles in a sentence.
- #32,661
- “extension” frequency rank
- #33,120
- “extensivo” frequency rank
- 65781
- confusion score
Side-by-Side Comparison
| Feature | extension | extensivo |
|---|---|---|
| Definition | Extensión. | Que se extiende o se puede extender, comunicar y aplicar a más objetos que los nombrados en caso determinado. |
Where the eye mixes extension and extensivo
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. extension (VCCVCCVVC) and extensivo (VCCVCCVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses extension with extensivo
These two trip readers on the page rather than in the ear: extension is [ɛk.stɑ̃.sjɔ̃] while extensivo is [ekst̪ẽnˈsiβ̞o]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 65781, 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]. extensivo is at rank #33,120, tagged as anadj, pronounced [ekst̪ẽnˈsiβ̞o].
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 65781, this pair ranks #41,625 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of extension vs extensivo
Shared letters: einostx. Private to "extension": -. Private to "extensivo": v.
"extension" · 9 letters · shape VCCVCCVVC · "extensivo" · 9 letters · shape VCCVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Can "extension" and "extensivo" be used interchangeably?
Frequency check: "extension" vs "extensivo" - which ranks higher?
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 "extension" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "extensivo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #41,625 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "extension" and "extensivo" 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 #41,625 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.