Which to use
“dumb” is an adjective and “dun” is a noun - they look or sound alike but fill different roles in a sentence.
- #2,788
- “dumb” frequency rank
- #18,810
- “dun” frequency rank
- 21598
- confusion score
Side-by-Side Comparison
| Feature | dumb | dun |
|---|---|---|
| Definition | Unable to speak; lacking power of speech. | A brownish grey colour. |
Where the eye mixes dumb and dun
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: dumb vs dun
These two trip readers on the page rather than in the ear: dumb is /dʌm/ while dun is /dʌn/. 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 21598, derived from the frequency rank of both members and their visual similarity.
dumb is recorded at frequency rank #2,788, classified as anadj, pronounced /dʌm/. dun is at rank #18,810, tagged as anoun, pronounced /dʌn/.
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 21598, this pair ranks #422,746 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of dumb vs dun
Shared letters: du. Private to "dumb": bm. Private to "dun": n.
"dumb" · 4 letters · shape CVCC · "dun" · 3 letters · shape CVC
Known mistypes of this pair
- dumb ← ddumb · dmub · dubm · dumbb · dummb · udmb
Frequently Asked Questions
Can "dumb" and "dun" be used interchangeably?
Which is more common, "dumb" or "dun"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "dumb" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dun" - compare definitions side by side with the headword page. Word entry
- This pair ranks #422,746 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "dumb" and "dun" also get mixed up with nearby pairs, the highest-scored neighbour is "dox vs dun". 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 #422,746 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.