Which to use
“formo” is a verb and “foso” is a noun - they look or sound alike but fill different roles in a sentence.
- #29,220
- “formo” frequency rank
- #24,157
- “foso” frequency rank
- 53377
- confusion score
Side-by-Side Comparison
| Feature | formo | foso |
|---|---|---|
| Definition | Primera persona del singular (yo) del presente de indicativo de formar o de formarse. | Depresión de relativa profundidad practicada en una superficie. |
Where the eye mixes formo and foso
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. formo runs 5 letters (CVCCV) against foso's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses formo with foso
These two trip readers on the page rather than in the ear: formo is [ˈfoɾmo] while foso is [ˈfoso]. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53377, derived from the frequency rank of both members and their visual similarity.
formo is recorded at frequency rank #29,220, classified as averb, pronounced [ˈfoɾmo]. foso is at rank #24,157, tagged as anoun, pronounced [ˈfoso].
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 53377, this pair ranks #88,172 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of formo vs foso
Shared letters: fo. Private to "formo": mr. Private to "foso": s.
"formo" · 5 letters · shape CVCCV · "foso" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "formo" for "foso" ever safe?
In ordinary Spanish text, does "formo" or "foso" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "formo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "foso" - compare definitions side by side with the headword page. Word entry
- This pair ranks #88,172 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "formo" and "foso" also get mixed up with nearby pairs, the highest-scored neighbour is "fora vs formo". 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 #88,172 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.