Which to use
“os” is a pronoun and “Osma” is a name - they look or sound alike but fill different roles in a sentence.
- #449
- “os” frequency rank
- #42,600
- “Osma” frequency rank
- 43049
- confusion score
Side-by-Side Comparison
| Feature | os | Osma |
|---|---|---|
| Definition | Caso acusativo y dativo del pronombre personal vosotros, una de las formas de la segunda persona del plural en español. | Apellido. |
Where the eye mixes os and Osma
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: os vs Osma
These two trip readers on the page rather than in the ear: os is [os] while Osma is [ˈosma]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “os” sits inside “Osma”, and the parts of speech differ too (pronoun vs name), which is usually the fastest check. Our composite confusion score for this pair is 43049, derived from the frequency rank of both members and their visual similarity.
os is recorded at frequency rank #449, classified as apron, pronounced [os]. Osma is at rank #42,600, tagged as aname, pronounced [ˈosma].
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 43049, this pair ranks #144,832 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of os vs Osma
Shared letters: os. Private to "os": -. Private to "Osma": am.
"os" · 2 letters · shape VC · "Osma" · 4 letters · shape VCCV
Known mistypes of this pair
- Osma ← omsa · osam · osmma · ossma · soma
Frequently Asked Questions
Is swapping "os" for "Osma" ever safe?
In ordinary Spanish text, does "os" or "Osma" 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 "os" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Osma" - compare definitions side by side with the headword page. Word entry
- This pair ranks #144,832 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "os" and "Osma" also get mixed up with nearby pairs, the highest-scored neighbour is "oirá vs Osma". 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 #144,832 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.