Which to use
“due” is an adjective and “dum” is a preposition - they look or sound alike but fill different roles in a sentence.
- #3,838
- “due” frequency rank
- #37,286
- “dum” frequency rank
- 41124
- confusion score
Side-by-Side Comparison
| Feature | due | dum |
|---|---|---|
| Definition | Féminin singulier de dû. | Pendant, durant, pendant que, tandis que. |
Where the eye mixes due and dum
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between due and dum
These two trip readers on the page rather than in the ear: due is \dy\ while dum is \dum\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - e in “due” becomes m in “dum”, and the parts of speech differ too (adjective vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 41124, derived from the frequency rank of both members and their visual similarity.
due is recorded at frequency rank #3,838, 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 41124, this pair ranks #235,416 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of due vs dum
Shared letters: du. Private to "due": e. Private to "dum": m.
"due" · 3 letters · shape CVV · "dum" · 3 letters · shape CVC
Frequently Asked Questions
Do "due" and "dum" mean the same thing in a sentence?
In ordinary French text, does "due" or "dum" show up more?
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 "due" 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 #235,416 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "due" and "dum" also get mixed up with nearby pairs, the highest-scored neighbour is "DCI vs dum". Nearby pair
Confusion rank #235,416 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.