Which to use
“dues” is an adjective and “dum” is a preposition - they look or sound alike but fill different roles in a sentence.
- #8,532
- “dues” frequency rank
- #37,286
- “dum” frequency rank
- 45818
- confusion score
Side-by-Side Comparison
| Feature | dues | dum |
|---|---|---|
| Definition | Féminin pluriel de dû. | Pendant, durant, pendant que, tandis que. |
Where the eye mixes dues and dum
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses dues with dum
These two trip readers on the page rather than in the ear: dues is \dy\ while dum is \dum\. 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 (adjective vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 45818, derived from the frequency rank of both members and their visual similarity.
dues is recorded at frequency rank #8,532, classified as anadj, pronounced \dy\. dum is at rank #37,286, tagged as aprep, pronounced \dum\.
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 45818, this pair ranks #199,790 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of dues vs dum
Shared letters: du. Private to "dues": es. Private to "dum": m.
"dues" · 4 letters · shape CVVC · "dum" · 3 letters · shape CVC
Known mistypes of this pair
- dues ← ddues · duess · duse · udes
Frequently Asked Questions
Can "dues" and "dum" be used interchangeably?
Frequency check: "dues" vs "dum" - which ranks higher?
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 "dues" 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 #199,790 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "dues" and "dum" also get mixed up with nearby pairs, the highest-scored neighbour is "DCI vs dum". 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 #199,790 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.