formolvsformosWhich spelling fits?

Quick tell: formol is a noun, formos is a verb, so they fill different roles in a sentence.

Which to use

“formol” is a noun and “formos” is a verb - they look or sound alike but fill different roles in a sentence.

#44,373
“formol” frequency rank
#13,742
“formos” frequency rank
58115
confusion score

Side-by-Side Comparison

Feature formol formos
Definition solução aquosa de formaldeído (CH₂O) primeira pessoa do plural do futuro do subjuntivo do verbo ser.

Where the eye mixes formol and formos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

6 ch
formol
6 ch
formos

Visual trap between formol and formos

These two trip readers on the page rather than in the ear: formol is /fuɾ.ˈmɔɫ/ while formos is /ˈfoɾ.mus/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - l in “formol” becomes s in “formos”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 58115, derived from the frequency rank of both members and their visual similarity.

formol is recorded at frequency rank #44,373, classified as anoun, pronounced /fuɾ.ˈmɔɫ/. formos is at rank #13,742, tagged as averb, pronounced /ˈfoɾ.mus/.

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 58115, this pair ranks #8,938 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of formol vs formos

Shared letters: fmor. Private to "formol": l. Private to "formos": s.

"formol" · 6 letters · shape CVCCVC  ·  "formos" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • formolfformol · fomrol · formlo · formmol · formoll · foroml · forrmol · fromol
  • formosfformos · fomros · formmos · formoss · formso · foroms · forrmos · fromos

Frequently Asked Questions

Can "formol" and "formos" be used interchangeably?
No - they are not even the same part of speech. "formol" is a noun and "formos" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "formol" or "formos" show up more?
"formos" is the more common of the two: it sits at frequency rank #13,742 in our Portuguese list, against #44,373 for "formol". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "formol" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "formos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,938 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "formol" and "formos" also get mixed up with nearby pairs, the highest-scored neighbour is "former vs formol". 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 #8,938 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list