Which to use
“Sergei” and “Sergey” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #15,269
- “Sergei” frequency rank
- #21,653
- “Sergey” frequency rank
- 36922
- confusion score
Side-by-Side Comparison
| Feature | Sergei | Sergey |
|---|---|---|
| Definition | A transliteration of the Russian male given name Серге́й (Sergéj), equivalent to Sergius. | A transliteration of the Russian male given name Серге́й (Sergéj). |
Letter map: Sergei vs Sergey
Shared letters muted; letters that set Sergei and Sergey apart highlighted. Shared run: 5. Sergei and Sergey follow the identical consonant-vowel pattern (CVCCVV). Same shape at a glance is often the real trap, independent of shared letters.
Spelling & dictionary notes on Sergei vs Sergey
Sergei and Sergey 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 a single letter - i in “Sergei” becomes y in “Sergey”. Our composite confusion score for this pair is 36922, derived from the frequency rank of both members and their visual similarity.
Sergei is recorded at frequency rank #15,269, classified as aname. Sergey is at rank #21,653, tagged as aname.
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 36922, this pair ranks #298,939 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Sergei vs Sergey
Shared letters: egrs. Private to "Sergei": i. Private to "Sergey": y.
"Sergei" · 6 letters · shape CVCCVV · "Sergey" · 6 letters · shape CVCCVV
Known mistypes of this pair
Frequently Asked Questions
Can "Sergei" and "Sergey" be used interchangeably?
In ordinary English text, does "Sergei" or "Sergey" show up more?
Useful next steps
Done with this confusable. These links stay specific to "Sergei" and "Sergey".
- Full dictionary entry for "Sergei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Sergey" - compare definitions side by side with the headword page. Word entry
- This pair ranks #298,939 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Sergei" and "Sergey" also get mixed up with nearby pairs, the highest-scored neighbour is "Seager vs Sergey". 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 #298,939 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.