Which to use
“overdue” is an adjective and “overrun” is a verb - they look or sound alike but fill different roles in a sentence.
- #15,017
- “overdue” frequency rank
- #18,149
- “overrun” frequency rank
- 33166
- confusion score
Side-by-Side Comparison
| Feature | overdue | overrun |
|---|---|---|
| Definition | Late; especially, past a deadline or too late to fulfill a need. | To defeat an enemy and invade in great numbers, seizing the enemy positions conclusively. |
Where the eye mixes overdue and overrun
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Why the eye confuses overdue with overrun
These two trip readers on the page rather than in the ear: overdue is /ˌəʊ.vəˈdju/ while overrun is /ˌəʊ.vəˈɹʌn/. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 33166, derived from the frequency rank of both members and their visual similarity.
overdue is recorded at frequency rank #15,017, classified as anadj, pronounced /ˌəʊ.vəˈdju/. overrun is at rank #18,149, tagged as averb, pronounced /ˌəʊ.vəˈɹʌn/.
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 33166, this pair ranks #331,750 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of overdue vs overrun
Shared letters: eoruv. Private to "overdue": d. Private to "overrun": n.
"overdue" · 7 letters · shape VCVCCVV · "overrun" · 7 letters · shape VCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "overdue" and "overrun" be used interchangeably?
In ordinary English text, does "overdue" or "overrun" show up more?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "overdue" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "overrun" - compare definitions side by side with the headword page. Word entry
- This pair ranks #331,750 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "overdue" and "overrun" also get mixed up with nearby pairs, the highest-scored neighbour is "overran vs overrun". 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 #331,750 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.