Which to use
“outdo” is a verb and “outer” is an adjective - they look or sound alike but fill different roles in a sentence.
- #40,825
- “outdo” frequency rank
- #4,694
- “outer” frequency rank
- 45519
- confusion score
Side-by-Side Comparison
| Feature | outdo | outer |
|---|---|---|
| Definition | To excel; go beyond in performance; surpass. | Outside; external. |
Where the eye mixes outdo and outer
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses outdo with outer
These two trip readers on the page rather than in the ear: outdo is /aʊtˈdu/ while outer is /ˈaʊtə/. 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 45519, derived from the frequency rank of both members and their visual similarity.
outdo is recorded at frequency rank #40,825, classified as averb, pronounced /aʊtˈdu/. outer is at rank #4,694, tagged as anadj, pronounced /ˈaʊtə/.
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 45519, this pair ranks #220,534 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of outdo vs outer
Shared letters: otu. Private to "outdo": d. Private to "outer": er.
"outdo" · 5 letters · shape VVCCV · "outer" · 5 letters · shape VVCVC
Known mistypes of this pair
Frequently Asked Questions
Do "outdo" and "outer" mean the same thing in a sentence?
Which is more common, "outdo" or "outer"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "outdo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "outer" - compare definitions side by side with the headword page. Word entry
- This pair ranks #220,534 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "outdo" and "outer" also get mixed up with nearby pairs, the highest-scored neighbour is "ould vs outdo". 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 #220,534 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.