Which to use
“obtuso” is an adjective and “opuso” is a verb - they look or sound alike but fill different roles in a sentence.
- #43,747
- “obtuso” frequency rank
- #15,187
- “opuso” frequency rank
- 58934
- confusion score
Side-by-Side Comparison
| Feature | obtuso | opuso |
|---|---|---|
| Definition | Que no tiene punta. | Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del pretérito perfecto simple de indicativo de oponer o de oponerse. |
Where the eye mixes obtuso and opuso
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. obtuso runs 6 letters (VCCVCV) against opuso's 5 (VCVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses obtuso with opuso
These two trip readers on the page rather than in the ear: obtuso is [oβ̞ˈt̪uso] while opuso is [oˈpuso]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 58934, derived from the frequency rank of both members and their visual similarity.
obtuso is recorded at frequency rank #43,747, classified as anadj, pronounced [oβ̞ˈt̪uso]. opuso is at rank #15,187, tagged as averb, pronounced [oˈpuso].
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 58934, this pair ranks #64,547 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of obtuso vs opuso
Shared letters: osu. Private to "obtuso": bt. Private to "opuso": p.
"obtuso" · 6 letters · shape VCCVCV · "opuso" · 5 letters · shape VCVCV
Known mistypes of this pair
Frequently Asked Questions
Can "obtuso" and "opuso" be used interchangeably?
Which is more common, "obtuso" or "opuso"?
What to do next
Eye-level mix-up between "obtuso" and "opuso" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "obtuso" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "opuso" - compare definitions side by side with the headword page. Word entry
- This pair ranks #64,547 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "obtuso" and "opuso" also get mixed up with nearby pairs, the highest-scored neighbour is "obeso vs obtuso". 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 #64,547 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.