Which to use
“out” is an adverb and “outdo” is a verb - they look or sound alike but fill different roles in a sentence.
- #45
- “out” frequency rank
- #40,825
- “outdo” frequency rank
- 40870
- confusion score
Side-by-Side Comparison
| Feature | out | outdo |
|---|---|---|
| Definition | Away from the inside or centre. | To excel; go beyond in performance; surpass. |
Where the eye mixes out and outdo
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. out runs 3 letters (VVC) against outdo's 5 (VVCCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: out vs outdo
These two trip readers on the page rather than in the ear: out is /aʊt/ while outdo is /aʊtˈdu/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “out” sits inside “outdo”, and the parts of speech differ too (adverb vs verb), which is usually the fastest check. Our composite confusion score for this pair is 40870, derived from the frequency rank of both members and their visual similarity.
out is recorded at frequency rank #45, classified as anadv, pronounced /aʊt/. outdo is at rank #40,825, tagged as averb, pronounced /aʊtˈdu/.
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 40870, this pair ranks #263,669 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of out vs outdo
Shared letters: otu. Private to "out": -. Private to "outdo": d.
"out" · 3 letters · shape VVC · "outdo" · 5 letters · shape VVCCV
Known mistypes of this pair
- outdo ← otudo · oudto · outddo · outod · outtdo · uotdo
Frequently Asked Questions
Can "out" and "outdo" be used interchangeably?
Frequency check: "out" vs "outdo" - 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 "out" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "outdo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #263,669 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "out" and "outdo" 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 #263,669 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.