fio
The verdict
“fio” is a regularly-used Portuguese word, ranked #3,904 in Portuguese word frequency and used as a noun.
- #3,904
- frequency rank, Portuguese
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - linha
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | fio |
| Language | Portuguese |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #3,904 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “fio” sits in Portuguese frequency
Spelling & Dictionary Insight
The Portuguese entry for fio is 3 letters long, classified as a noun. Corpus data places it at rank #3,904 in overall Portuguese word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
fio doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. It also participates in 20 confusable-pair relationships, "foi", "for", "fui", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Wiktionary doesn't record an etymology for this headword, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct Portuguese form is fio, spelled F-I-O.
Definition
- 1linha
- 2segmento fino, cilíndrico, flexível e alongado de um certo material
- 3parte cortante de facas, navalhas
- 4nos microblogues, conjunto de mensagens pequenas agrupadas de forma a formar um texto maior, devido à limitação de caracteres desses sites
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Portuguese corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "fio"?
What does "fio" mean?
What words are commonly confused with "fio"?
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Is PlainSpell free to use?
Using “fio”
The practical upshot for anyone who landed here from a spell-check.
- The one correct Portuguese spelling is F-I-O - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “foi” - see the side-by-side comparison. fio vs foi
- Browse more Portuguese words and confusable pairs in the same reference. Portuguese words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.