Which to use
“simi” is a pronoun and “sis” is a noun - they look or sound alike but fill different roles in a sentence.
- #37,223
- “simi” frequency rank
- #12,501
- “sis” frequency rank
- 49724
- confusion score
Side-by-Side Comparison
| Feature | simi | sis |
|---|---|---|
| Definition | What?; what is this […] ?; what […] are you talking about? | Clipping of sister. |
Where the eye mixes simi and sis
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses simi with sis
These two trip readers on the page rather than in the ear: simi is [si˦mi˦˨] while sis is /sɪs/. 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 (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 49724, derived from the frequency rank of both members and their visual similarity.
simi is recorded at frequency rank #37,223, classified as apron, pronounced [si˦mi˦˨]. sis is at rank #12,501, tagged as anoun, pronounced /sɪs/.
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 49724, this pair ranks #180,958 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of simi vs sis
Shared letters: is. Private to "simi": m. Private to "sis": -.
"simi" · 4 letters · shape CVCV · "sis" · 3 letters · shape CVC
Known mistypes of this pair
- simi ← ismi · siim · simmi · smii · ssimi
Frequently Asked Questions
Is swapping "simi" for "sis" ever safe?
In ordinary English text, does "simi" or "sis" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "simi" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sis" - compare definitions side by side with the headword page. Word entry
- This pair ranks #180,958 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "simi" and "sis" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs simi". 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 #180,958 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.