Which to use
“Dunn” is a name and “dunno” is a contraction - they look or sound alike but fill different roles in a sentence.
- #11,689
- “Dunn” frequency rank
- #10,203
- “dunno” frequency rank
- 21892
- confusion score
Side-by-Side Comparison
| Feature | Dunn | dunno |
|---|---|---|
| Definition | A surname from Irish. | Pronunciation spelling of do not know; pronunciation spelling of does not know. |
Where the eye mixes Dunn and dunno
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: Dunn vs dunno
These two trip readers on the page rather than in the ear: Dunn is /dʌn/ while dunno is /ˈdʌnəʊ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “Dunn” sits inside “dunno”, and the parts of speech differ too (name vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 21892, derived from the frequency rank of both members and their visual similarity.
Dunn is recorded at frequency rank #11,689, classified as aname, pronounced /dʌn/. dunno is at rank #10,203, tagged as acontraction, pronounced /ˈdʌnəʊ/.
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 21892, this pair ranks #420,608 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of Dunn vs dunno
Shared letters: dnu. Private to "Dunn": -. Private to "dunno": o.
"Dunn" · 4 letters · shape CVCC · "dunno" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "Dunn" for "dunno" ever safe?
Which is more common, "Dunn" or "dunno"?
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 "Dunn" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dunno" - compare definitions side by side with the headword page. Word entry
- This pair ranks #420,608 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Dunn" and "dunno" also get mixed up with nearby pairs, the highest-scored neighbour is "DNP vs Dunn". 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 #420,608 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.