Which to use
“mum” is a noun and “mun” is a verb - they look or sound alike but fill different roles in a sentence.
- #3,573
- “mum” frequency rank
- #28,631
- “mun” frequency rank
- 32204
- confusion score
Side-by-Side Comparison
| Feature | mum | mun |
|---|---|---|
| Definition | Mother. | Must. |
Where the eye mixes mum and mun
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses mum with mun
These two trip readers on the page rather than in the ear: mum is /mʌm/ while mun is /mʌn/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - m in “mum” becomes n in “mun”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 32204, derived from the frequency rank of both members and their visual similarity.
mum is recorded at frequency rank #3,573, classified as anoun, pronounced /mʌm/. mun is at rank #28,631, tagged as averb, pronounced /mʌn/.
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 32204, this pair ranks #339,776 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of mum vs mun
Shared letters: mu. Private to "mum": -. Private to "mun": n.
"mum" · 3 letters · shape CVC · "mun" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "mum" for "mun" ever safe?
Which is more common, "mum" or "mun"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "mum" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "mun" - compare definitions side by side with the headword page. Word entry
- This pair ranks #339,776 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "mum" and "mun" also get mixed up with nearby pairs, the highest-scored neighbour is "MMP vs mun". Nearby pair
Confusion rank #339,776 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.