Which to use
“mould” and “mudd” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #16,078
- “mould” frequency rank
- #48,367
- “mudd” frequency rank
- 64445
- confusion score
Side-by-Side Comparison
| Feature | mould | mudd |
|---|---|---|
| Definition | Commonwealth standard spelling of mold. | Obsolete spelling of mud. |
Letter map: mould vs mudd
Shared letters muted; letters that set mould and mudd apart highlighted. Shared run: 3.
Spelling & dictionary notes on mould vs mudd
mould and mudd are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 64445, derived from the frequency rank of both members and their visual similarity.
mould is recorded at frequency rank #16,078, classified as anoun, pronounced /moʊld/. mudd is at rank #48,367, tagged as anoun.
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 64445, this pair ranks #77,685 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of mould vs mudd
Shared letters: dmu. Private to "mould": lo. Private to "mudd": -.
"mould" · 5 letters · shape CVVCC · "mudd" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Can "mould" and "mudd" be used interchangeably?
Frequency check: "mould" vs "mudd" - which ranks higher?
Useful next steps
Done with this confusable. These links stay specific to "mould" and "mudd".
- Full dictionary entry for "mould" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "mudd" - compare definitions side by side with the headword page. Word entry
- This pair ranks #77,685 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "mould" and "mudd" also get mixed up with nearby pairs, the highest-scored neighbour is "muda vs mudd". 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 #77,685 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.