Which to use
“mad” is an adjective and “mudd” is a noun - they look or sound alike but fill different roles in a sentence.
- #1,868
- “mad” frequency rank
- #48,367
- “mudd” frequency rank
- 50235
- confusion score
Side-by-Side Comparison
| Feature | mad | mudd |
|---|---|---|
| Definition | Insane; crazy, mentally deranged. | Obsolete spelling of mud. |
Letter map: mad vs mudd
Shared letters muted; letters that set mad and mudd apart highlighted. Shared run: 2.
Grammar separator: mad vs mudd
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: mad is anadjective and muddanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 50235, derived from the frequency rank of both members and their visual similarity.
mad is recorded at frequency rank #1,868, classified as anadj, pronounced /ˈmæd/. 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 50235, this pair ranks #176,103 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of mad vs mudd
Shared letters: dm. Private to "mad": a. Private to "mudd": u.
"mad" · 3 letters · shape CVC · "mudd" · 4 letters · shape CVCC
Known mistypes of this pair
- mudd ← mdud · mmudd · umdd
Frequently Asked Questions
Can "mad" and "mudd" be used interchangeably?
In ordinary English text, does "mad" or "mudd" show up more?
What to do next
Pair "mad" vs "mudd" is on the table, pick a follow-up below.
- Full dictionary entry for "mad" 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 #176,103 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "mad" 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 #176,103 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.