Which to use
“dob” is a verb and “dum” is an adjective - they look or sound alike but fill different roles in a sentence.
- #44,170
- “dob” frequency rank
- #23,517
- “dum” frequency rank
- 67687
- confusion score
Side-by-Side Comparison
| Feature | dob | dum |
|---|---|---|
| Definition | To report a person to someone in authority for a wrongdoing. (For transitive forms see dob in, dob on.) | cooked with steam |
Where the eye mixes dob and dum
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between dob and dum
These two trip readers on the page rather than in the ear: dob is /dɑb/ while dum is /dʌm/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 67687, 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/. dum is at rank #23,517, tagged as anadj, pronounced /dʌm/.
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 67687, this pair ranks #62,203 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of dob vs dum
Shared letters: d. Private to "dob": bo. Private to "dum": mu.
"dob" · 3 letters · shape CVC · "dum" · 3 letters · shape CVC
Frequently Asked Questions
Can "dob" and "dum" be used interchangeably?
Which is more common, "dob" or "dum"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "dob" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #62,203 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "dob" and "dum" also get mixed up with nearby pairs, the highest-scored neighbour is "dob vs dox". Nearby pair
Confusion rank #62,203 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.