Which to use
“redo” is a verb and “ref” is a noun - they look or sound alike but fill different roles in a sentence.
- #22,787
- “redo” frequency rank
- #7,730
- “ref” frequency rank
- 30517
- confusion score
Side-by-Side Comparison
| Feature | redo | ref |
|---|---|---|
| Definition | To do again. | Clipping of referee. |
Where the eye mixes redo and ref
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between redo and ref
These two trip readers on the page rather than in the ear: redo is /ɹiˈduː/ while ref is /ɹɛf/. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 30517, derived from the frequency rank of both members and their visual similarity.
redo is recorded at frequency rank #22,787, classified as averb, pronounced /ɹiˈduː/. ref is at rank #7,730, tagged as anoun, pronounced /ɹɛf/.
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 30517, this pair ranks #353,904 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of redo vs ref
Shared letters: er. Private to "redo": do. Private to "ref": f.
"redo" · 4 letters · shape CVCV · "ref" · 3 letters · shape CVC
Known mistypes of this pair
- redo ← erdo · rdeo · reddo · reod · rredo
Frequently Asked Questions
Is swapping "redo" for "ref" ever safe?
In ordinary English text, does "redo" or "ref" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "redo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ref" - compare definitions side by side with the headword page. Word entry
- This pair ranks #353,904 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "redo" and "ref" also get mixed up with nearby pairs, the highest-scored neighbour is "redo vs reedy". 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 #353,904 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.