Which to use
“dum” is a preposition and “dus” is an adjective - they look or sound alike but fill different roles in a sentence.
- #37,286
- “dum” frequency rank
- #9,817
- “dus” frequency rank
- 47103
- confusion score
Side-by-Side Comparison
| Feature | dum | dus |
|---|---|---|
| Definition | Pendant, durant, pendant que, tandis que. | Masculin pluriel de dû. |
Where the eye mixes dum and dus
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses dum with dus
These two trip readers on the page rather than in the ear: dum is \dum\ while dus is \dy\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - m in “dum” becomes s in “dus”, and the parts of speech differ too (preposition vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 47103, derived from the frequency rank of both members and their visual similarity.
dum is recorded at frequency rank #37,286, classified as aprep, pronounced \dum\. dus is at rank #9,817, tagged as anadj, pronounced \dy\.
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 47103, this pair ranks #189,611 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of dum vs dus
Shared letters: du. Private to "dum": m. Private to "dus": s.
"dum" · 3 letters · shape CVC · "dus" · 3 letters · shape CVC
Frequently Asked Questions
Can "dum" and "dus" be used interchangeably?
Which is more common, "dum" or "dus"?
Useful next steps
Eye-level mix-up between "dum" and "dus" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "dum" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #189,611 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "dum" and "dus" also get mixed up with nearby pairs, the highest-scored neighbour is "DCI vs dum". Nearby pair
Confusion rank #189,611 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.