fiber
/ˈfaɪ.bɚ/
"fiber" is a 5-letter English headword indexed on PlainSpell.
The verdict
“fiber” is a regularly-used English word, ranked #6,470 in English word frequency and used as a noun.
- #6,470
- frequency rank, English
- 5
- letters
- 6
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.
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 | fiber |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈfaɪ.bɚ/ |
| Letters | 5 |
| Frequency rank | #6,470 |
| Misspellings tracked | 6 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “fiber” sits in English frequency
Spelling & Dictionary Insight
The English entry for fiber is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈfaɪ.bɚ/. Corpus data places it at rank #6,470 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 9 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 6 likely wrong-spelling variants for fiber, with forms such as "fbier", "ffiber", and "fibber". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "fir", "fie", "five", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From French fibre, from Old French fibre, from Latin fibra. The correct English form is fiber, spelled F-I-B-E-R.
Definition
- 1A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.
- 2A material in the form of fibers.
- 3A material whose length is at least 1000 times its width.
- 4Dietary fiber.
- 5Moral strength and resolve.
- 6The preimage of a given point in the range of a map.
- 7The pullback of a morphism along a global element (called the fiber of the morphism over the global element).
- 8A kind of lightweight thread of execution.
- 9A long tubular cell found in bodily tissue.
Etymology
From French fibre, from Old French fibre, from Latin fibra.
Common misspellings
Also misspelled as: fbier,ffiber,fibber,fiberr,fiebr,ifber
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of fiber - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “fiber”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is F-I-B-E-R - every other letter order is a misspelling in standard orthography.
- Say it as /ˈfaɪ.bɚ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “fir” - see the side-by-side comparison. fiber vs fir
- Browse more English words and confusable pairs in the same reference. English 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.