Which to use
“crud” is a noun and “cuz” is an adverb - they look or sound alike but fill different roles in a sentence.
- #45,306
- “crud” frequency rank
- #8,407
- “cuz” frequency rank
- 53713
- confusion score
Side-by-Side Comparison
| Feature | crud | cuz |
|---|---|---|
| Definition | Dirt, filth or refuse. | Informal spelling of 'cause (“because”). |
Where the eye mixes crud and cuz
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses crud with cuz
These two trip readers on the page rather than in the ear: crud is /kɹʌd/ while cuz is /kʌz/. 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 (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 53713, derived from the frequency rank of both members and their visual similarity.
crud is recorded at frequency rank #45,306, classified as anoun, pronounced /kɹʌd/. cuz is at rank #8,407, tagged as anadv, pronounced /kʌz/.
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 53713, this pair ranks #146,795 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of crud vs cuz
Shared letters: cu. Private to "crud": dr. Private to "cuz": z.
"crud" · 4 letters · shape CCVC · "cuz" · 3 letters · shape CVC
Known mistypes of this pair
- crud ← ccrud · crdu · crrud · crudd · rcud
Frequently Asked Questions
Is swapping "crud" for "cuz" ever safe?
Which is more common, "crud" or "cuz"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "crud" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "cuz" - compare definitions side by side with the headword page. Word entry
- This pair ranks #146,795 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "crud" and "cuz" also get mixed up with nearby pairs, the highest-scored neighbour is "crud vs CVD". 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 #146,795 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.