Which to use
“ido” is an adjective and “isi” is a noun - they look or sound alike but fill different roles in a sentence.
- #1,216
- “ido” frequency rank
- #39,822
- “isi” frequency rank
- 41038
- confusion score
Side-by-Side Comparison
| Feature | ido | isi |
|---|---|---|
| Definition | Loco, falto de cordura. | El extranjero, tierra o país de donde uno no es. |
Where the eye mixes ido and isi
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. ido and isi follow the identical consonant-vowel pattern (VCV). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses ido with isi
These two trip readers on the page rather than in the ear: ido is [ˈið̞o] while isi is /ì.sí/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 41038, derived from the frequency rank of both members and their visual similarity.
ido is recorded at frequency rank #1,216, classified as anadj, pronounced [ˈið̞o]. isi is at rank #39,822, tagged as anoun, pronounced /ì.sí/.
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 41038, this pair ranks #155,827 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ido vs isi
Shared letters: i. Private to "ido": do. Private to "isi": s.
"ido" · 3 letters · shape VCV · "isi" · 3 letters · shape VCV
Frequently Asked Questions
Do "ido" and "isi" mean the same thing in a sentence?
Frequency check: "ido" vs "isi" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "ido" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "isi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #155,827 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "ido" and "isi" also get mixed up with nearby pairs, the highest-scored neighbour is "isi vs iza". Nearby pair
Confusion rank #155,827 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.