fi
Spanish, noun/ˈfi/
fi is spelled F-I (2 letters) and appears 12 times per million words in written Spanish, the 6,270th most frequent Spanish word form (wordfreq, 2021 data). Fi is a Spanish feminine noun meaning “phi; the Greek letter Φ, φ” (English Wiktionary, September 2026). The Spanish Wiktionary (Wikcionario) defines it as “Vigésima primera letra del alfabeto griego (Φ, φ), que se convierte en ph en el alfabeto latino y en f y…”.
What does fi mean in English?
noun
- 1
femininephi; the Greek letter Φ, φ
Source: English Wiktionary, Spanish section, dump of September 2, 2026 (CC BY-SA 4.0).
How Spanish dictionaries define it
noun: 1. Vigésima primera letra del alfabeto griego (Φ, φ), que se convierte en ph en el alfabeto latino y en f y también en ph en las lenguas derivadas del latín.
The definition in the Spanish Wiktionary (Wikcionario), in Spanish.
Source: Spanish Wiktionary (Wikcionario), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of fi
- fíes plural
- fis plural
Source: English Wiktionary and Spanish Wiktionary (Wikcionario) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce fi?
- /ˈfi/
- [ˈfi]
Sources: English Wiktionary, Spanish Wiktionary (Wikcionario) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to fi
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is fi in Spanish?
fi appears 12 times per million words in written Spanish.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).