Which to use
“filiar” and “firmar” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #41,026
- “filiar” frequency rank
- #16,766
- “firmar” frequency rank
- 57792
- confusion score
Side-by-Side Comparison
| Feature | filiar | firmar |
|---|---|---|
| Definition | tomar como filho, adotar | tornar firme |
Where the eye mixes filiar and firmar
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses filiar with firmar
A purely visual mix-up. filiar (/fi.ˈljaɾ/) and firmar (/fiɾ.ˈmaɾ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 57792, derived from the frequency rank of both members and their visual similarity.
filiar is recorded at frequency rank #41,026, classified as averb, pronounced /fi.ˈljaɾ/. firmar is at rank #16,766, tagged as averb, pronounced /fiɾ.ˈmaɾ/.
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 57792, this pair ranks #9,124 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of filiar vs firmar
Shared letters: afir. Private to "filiar": l. Private to "firmar": m.
"filiar" · 6 letters · shape CVCVVC · "firmar" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Do "filiar" and "firmar" mean the same thing in a sentence?
In ordinary Portuguese text, does "filiar" or "firmar" show up more?
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 "filiar" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "firmar" - compare definitions side by side with the headword page. Word entry
- This pair ranks #9,124 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "filiar" and "firmar" also get mixed up with nearby pairs, the highest-scored neighbour is "filão vs filiar". 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 #9,124 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.