omi vs oni, What's the Difference?

Which to use

“omi” and “oni” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#49,532
“omi” frequency rank: #36,267
“oni” frequency rank: 85799
confusion score

Side-by-Side Comparison

Feature	omi	oni
Definition	A man.	A Japanese evil spirit or demon.

Letter map: omi vs oni

Shared letters muted; letters that set omi and oni apart highlighted. Shared run: 2. omi and oni follow the identical consonant-vowel pattern (VCV). Same shape at a glance is often the real trap, independent of shared letters.

3 ch

omi

3 ch

oni

Pair insight - omi / oni

omi and oni 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 - m in “omi” becomes n in “oni”. Our composite confusion score for this pair is 85799, derived from the frequency rank of both members and their visual similarity.

omi is recorded at frequency rank #49,532, classified as anoun. oni is at rank #36,267, tagged as anoun, pronounced /ˈəʊni/.

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 85799, this pair ranks #9,843 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of omi vs oni

Shared letters: io. Private to "omi": m. Private to "oni": n.

"omi" · 3 letters · shape VCV · "oni" · 3 letters · shape VCV

Frequently Asked Questions

Is swapping "omi" for "oni" ever safe?

No. They differ by a single letter - m in “omi” becomes n in “oni”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

In ordinary English text, does "omi" or "oni" show up more?

"oni" is the more common of the two: it sits at frequency rank #36,267 in our English list, against #49,532 for "omi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "omi" and "oni". Here's where to go from here.

Full dictionary entry for "omi" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "oni" - compare definitions side by side with the headword page. Word entry
This pair ranks #9,843 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"omi" and "oni" also get mixed up with nearby pairs, the highest-scored neighbour is "omi vs OWS". Nearby pair

Confusion rank #9,843 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.