Which to use
“und” is a conjunction and “under” is a preposition - they look or sound alike but fill different roles in a sentence.
- #14,978
- “und” frequency rank
- #18,108
- “under” frequency rank
- 33086
- confusion score
Side-by-Side Comparison
| Feature | und | under |
|---|---|---|
| Definition | Y. | Debajo, bajo. |
Where the eye mixes und and under
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: und vs under
These two trip readers on the page rather than in the ear: und is /ʊnt/ while under is /ˈʌn.də(ɹ)/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “und” sits inside “under”, and the parts of speech differ too (conjunction vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 33086, derived from the frequency rank of both members and their visual similarity.
und is recorded at frequency rank #14,978, classified as aconj, pronounced /ʊnt/. under is at rank #18,108, tagged as aprep, pronounced /ˈʌn.də(ɹ)/.
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 33086, this pair ranks #198,645 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of und vs under
Shared letters: dnu. Private to "und": -. Private to "under": er.
"und" · 3 letters · shape VCC · "under" · 5 letters · shape VCCVC
Known mistypes of this pair
- under ← nuder · udner · undder · underr · undre · unedr · unnder
Frequently Asked Questions
Is swapping "und" for "under" ever safe?
In ordinary Spanish text, does "und" or "under" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "und" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "under" - compare definitions side by side with the headword page. Word entry
- This pair ranks #198,645 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "und" and "under" also get mixed up with nearby pairs, the highest-scored neighbour is "und vs UPN". 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 #198,645 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.