Which to use
“dob” is a verb and “dud” is a noun - they look or sound alike but fill different roles in a sentence.
- #44,170
- “dob” frequency rank
- #29,251
- “dud” frequency rank
- 73421
- confusion score
Side-by-Side Comparison
| Feature | dob | dud |
|---|---|---|
| Definition | To report a person to someone in authority for a wrongdoing. (For transitive forms see dob in, dob on.) | A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile. |
Where the eye mixes dob and dud
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between dob and dud
These two trip readers on the page rather than in the ear: dob is /dɑb/ while dud is /dʌd/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 73421, derived from the frequency rank of both members and their visual similarity.
dob is recorded at frequency rank #44,170, classified as averb, pronounced /dɑb/. dud is at rank #29,251, tagged as anoun, pronounced /dʌd/.
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 73421, this pair ranks #39,688 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of dob vs dud
Shared letters: d. Private to "dob": bo. Private to "dud": u.
"dob" · 3 letters · shape CVC · "dud" · 3 letters · shape CVC
Frequently Asked Questions
Can "dob" and "dud" be used interchangeably?
Which is more common, "dob" or "dud"?
After this comparison
Eye-level mix-up between "dob" and "dud" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "dob" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dud" - compare definitions side by side with the headword page. Word entry
- This pair ranks #39,688 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "dob" and "dud" also get mixed up with nearby pairs, the highest-scored neighbour is "dob vs dox". Nearby pair
Confusion rank #39,688 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.