fui
[ˈfwi]
The verdict
“fui” is in the everyday core of Spanish, ranked #852 in Spanish word frequency and used as a verb.
- #852
- frequency rank, Spanish
- 3
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Primera persona del singular (yo) del pretérito perfecto simple de indicativo de ser.
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 | fui |
| Language | Spanish |
| Part of speech | Verb |
| IPA | [ˈfwi] |
| Letters | 3 |
| Frequency rank | #852 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “fui” sits in Spanish frequency
Spelling & Dictionary Insight
The Spanish entry for fui is 3 letters long, classified as a verb, and transcribed in the International Phonetic Alphabet as [ˈfwi]. Corpus data places it at rank #852 in overall Spanish word frequency, putting it firmly in the everyday core of the language. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
fui doesn't appear in our generated misspelling index, typically a sign the spelling maps closely to how the word sounds. It also participates in 20 confusable-pair relationships, "für", "fut", "full", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
No documented word history exists for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Spanish form is fui, spelled F-U-I.
Definition
- 1Primera persona del singular (yo) del pretérito perfecto simple de indicativo de ser.
- 2Primera persona del singular (yo) del pretérito perfecto simple de indicativo de ir o de irse.
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 Spanish corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "fui"?
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Is PlainSpell free to use?
Using “fui”
The practical upshot for anyone who landed here from a spell-check.
- The one correct Spanish spelling is F-U-I - every other letter order is a misspelling in standard orthography.
- Say it as [ˈfwi] (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “für” - see the side-by-side comparison. fui vs für
- Browse more Spanish words and confusable pairs in the same reference. Spanish 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.