Which to use
“obligatoria” is an adjective and “obligatorios” is a noun - they look or sound alike but fill different roles in a sentence.
- #7,605
- “obligatoria” frequency rank
- #23,153
- “obligatorios” frequency rank
- 30758
- confusion score
Side-by-Side Comparison
| Feature | obligatoria | obligatorios |
|---|---|---|
| Definition | Forma del femenino de obligatorio. | Forma del plural de obligatorio. |
Where the eye mixes obligatoria and obligatorios
Muted = shared; highlighted = the visual trap. They share 10 letters in sequence. obligatoria runs 11 letters (VCCVCVCVCVV) against obligatorios's 12 (VCCVCVCVCVVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between obligatoria and obligatorios
These two trip readers on the page rather than in the ear: obligatoria is [oβ̞liɣ̞aˈt̪oɾja] while obligatorios is [oβ̞liɣ̞aˈt̪oɾjos]. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 30758, derived from the frequency rank of both members and their visual similarity.
obligatoria is recorded at frequency rank #7,605, classified as anadj, pronounced [oβ̞liɣ̞aˈt̪oɾja]. obligatorios is at rank #23,153, tagged as anoun, pronounced [oβ̞liɣ̞aˈt̪oɾjos].
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 30758, this pair ranks #210,429 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of obligatoria vs obligatorios
Shared letters: abgilort. Private to "obligatoria": -. Private to "obligatorios": s.
"obligatoria" · 11 letters · shape VCCVCVCVCVV · "obligatorios" · 12 letters · shape VCCVCVCVCVVC
Known mistypes of this pair
- obligatoria ← boligatoria · obbligatoria · obilgatoria · oblgiatoria · obliagtoria · obligaotria · obligatoira · obligatorai
- obligatorios ← boligatorios · obbligatorios · obilgatorios · oblgiatorios · obliagtorios · obligaotrios · obligatoiros · obligatorioss
Frequently Asked Questions
Can "obligatoria" and "obligatorios" be used interchangeably?
Which is more common, "obligatoria" or "obligatorios"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "obligatoria" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "obligatorios" - compare definitions side by side with the headword page. Word entry
- This pair ranks #210,429 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "obligatoria" and "obligatorios" also get mixed up with nearby pairs, the highest-scored neighbour is "obligaría vs obligatoria". 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 #210,429 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.