Ancient Greek φεῖ

→ English phi (derived)

→ Catalan fi (derived)

→ Greek φι (mention)

→ Finnish fii (derived)

→ Ancient Greek ξεῖ (link)

→ Hungarian fi (derived)

→ Japanese フィー (derived)

→ Japanese ファイ (derived)

→ Russian фи (borrowed)

→ Slovak fí (borrowed)