Which to use
“speed” and “speedo” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,099
- “speed” frequency rank
- #42,415
- “speedo” frequency rank
- 43514
- confusion score
Side-by-Side Comparison
| Feature | speed | speedo |
|---|---|---|
| Definition | The state of moving quickly or the capacity for rapid motion. | A speedometer, particularly one in a race car or other automobile. |
Letter map: speed vs speedo
Shared letters muted; letters that set speed and speedo apart highlighted. Shared run: 5.
Spelling & dictionary notes on speed vs speedo
speed and speedo are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 extra letter(s) - “speed” sits inside “speedo”. Our composite confusion score for this pair is 43514, derived from the frequency rank of both members and their visual similarity.
speed is recorded at frequency rank #1,099, classified as anoun, pronounced /spiːd/. speedo is at rank #42,415, tagged as anoun.
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 43514, this pair ranks #239,289 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of speed vs speedo
Shared letters: deps. Private to "speed": -. Private to "speedo": o.
"speed" · 5 letters · shape CCVVC · "speedo" · 6 letters · shape CCVVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "speed" for "speedo" ever safe?
Frequency check: "speed" vs "speedo" - which ranks higher?
After this comparison
Pair "speed" vs "speedo" is on the table, pick a follow-up below.
- Full dictionary entry for "speed" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "speedo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #239,289 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "speed" and "speedo" also get mixed up with nearby pairs, the highest-scored neighbour is "speedo vs speer". 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 #239,289 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.