Which to use
“deber” is a verb and “deir” is an adjective - they look or sound alike but fill different roles in a sentence.
- #3,112
- “deber” frequency rank
- #46,473
- “deir” frequency rank
- 49585
- confusion score
Side-by-Side Comparison
| Feature | deber | deir |
|---|---|---|
| Definition | (seguido del infinitivo) Estar o verse obligado de hacer algo. | Mutación suave del adjetivo numeral cardinal femenino teir ('tres') |
Where the eye mixes deber and deir
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. deber runs 5 letters (CVCVC) against deir's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses deber with deir
These two trip readers on the page rather than in the ear: deber is [d̪eˈβ̞eɾ] while deir is [ˈdɛjr]. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 49585, derived from the frequency rank of both members and their visual similarity.
deber is recorded at frequency rank #3,112, classified as averb, pronounced [d̪eˈβ̞eɾ]. deir is at rank #46,473, tagged as anadj, pronounced [ˈdɛjr].
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 49585, this pair ranks #107,974 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of deber vs deir
Shared letters: der. Private to "deber": b. Private to "deir": i.
"deber" · 5 letters · shape CVCVC · "deir" · 4 letters · shape CVVC
Known mistypes of this pair
Frequently Asked Questions
Do "deber" and "deir" mean the same thing in a sentence?
In ordinary Spanish text, does "deber" or "deir" show up more?
Useful next steps
Eye-level mix-up between "deber" and "deir" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "deber" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "deir" - compare definitions side by side with the headword page. Word entry
- This pair ranks #107,974 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "deber" and "deir" also get mixed up with nearby pairs, the highest-scored neighbour is "deir vs Deva". 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 #107,974 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.