Which to use
“crud” and “crux” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,306
- “crud” frequency rank
- #27,109
- “crux” frequency rank
- 72415
- confusion score
Side-by-Side Comparison
| Feature | crud | crux |
|---|---|---|
| Definition | Dirt, filth or refuse. | The basic, central, or essential point or feature. |
Where the spellings diverge
Shared letters are muted; the letters that actually set crud and crux apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
A purely visual mix-up. crud (/kɹʌd/) and crux (/kɹʌks/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - d in “crud” becomes x in “crux”. Our composite confusion score for this pair is 72415, 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/. crux is at rank #27,109, tagged as anoun, pronounced /kɹʌks/.
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 72415, this pair ranks #43,132 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of crud vs crux
Shared letters: cru. Private to "crud": d. Private to "crux": x.
"crud" · 4 letters · shape CCVC · "crux" · 4 letters · shape CCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "crud" and "crux" be used interchangeably?
Which is more common, "crud" or "crux"?
Remembering crud vs crux
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “crud” entry
- Browse more pairs most likely to be confused. Most confusable