filo

Forms

filo m (plural fili m or (collectively or in fixed expressions) fila f, diminutive filìno or filétto)^[1] The plural is fili;^[2][1][3] fila (feminine) is used with a collective sense and in fixed phrases, continuing the Latin neuter plural fīla.^[2][1][3] Before a word it is often shortened to fil (fil di ferro).^[1][4] Old Italian forms include filu, fillo and firo.^[5]

Etymology

It is inherited from Latin fīlum (“thread, line”).^{[6][7][4][1][8]} It is pan-Romance: French fil, Occitan fil, Catalan fil, Spanish hilo, Portuguese fio, Sardinian filu and Romanian fir.^[7][9] DEI notes that many of the secondary senses of the Italian word already existed in spoken Latin.^[8]

Latin fīlum continues Proto-Italic *fī(s)lo-, from Proto-Indo-European *gʷʰiH-(s-)lo- (“sinew, sinew thread”).^[10][1] Its relatives are words for sinews and veins: Lithuanian gýsla, Proto-Slavic *žìla, Old Armenian ջիլ (ǰil) and Welsh gïau.^[10][7][1] Latin also had a variant hīlum, continued in the learned ilo.^[7][11]

Earliest recorded meaning

The TLIO's first record is in Brunetto Latini's Tesoretto (before 1274), and DELI dates the textile sense, thread spun for weaving and sewing, to Bono Giamboni (before 1292).^[5][6] In the GDLI's quotation from Giamboni, a fine thread is tied to the end of an arrow.^[12]

Semantic evolution

Old Italian already used the word for anything long and thin like thread, such as metal wire (Dante has filo di ferro before 1321), for the thread on which a scale's pans hang, and figuratively for the fragility of a condition, life hanging by a thread.^[6][5] The filo of a narrative or of a river's course, its continuity and direction, is recorded at the beginning of the 14th century, and the end of a skein, the clue, before 1367.^[6] The cutting edge of a blade is in Ariosto (1516), and the sense “a tiny amount” (un filo di speranza) before 1699.^[6]

Nocentini notes how many metaphors the word and its verb filare developed: the filo della schiena “spine”, the filo del rasoio, the filo del discorso;^[7] filare came to mean “to run smoothly”, “to go fast” and, from filare il perfetto amore, “to court”.^[7] The filo d'Arianna recalls the thread Ariadne gave Theseus to find his way out of the Labyrinth.^[6] The puppet's string appears in Carducci in 1862.^[6] In fencing, a filo is a thrust along the opponent's blade (1513), a term German borrowed.^[13] With electricity and the telephone the word came to mean an electric wire or line.^[4]

Timeline

• Before 1274 – Brunetto Latini uses filo in the Tesoretto.^[5]
• Before 1292 – Bono Giamboni uses it for spun thread.^[6]
• Before 1321 – Dante writes filo di ferro, iron wire.^[6]
• Early 14th century – A translation of Cicero uses it for continuity, direction.^[6]
• 1513 – The fencing term filo is recorded.^[13]
• 1516 – Ariosto uses it for the edge of a blade.^[6]
• 1862 – Carducci uses it for a puppet's string.^[6]
• 1956 – Filo is recorded as an Italian form of phylum.^[4]

Meanings

Noun

1. thread, yarn: a long, thin strand spun from textile fibres, used for sewing, weaving and embroidery: un rocchetto di filo bianco; a piece of such thread: Hai un filo sulla manica.^[4][14][2]
2. string, cord.^[4][1]
3. wire of metal or plastic; an electric wire or cable: il filo del caricabatterie.^[4][2][1]
4. Anything thin and long like a thread: a blade of grass, a strand of cheese or of a spider's web, a trickle of liquid: un sottile filo di bava.^[4][2][1]
5. A string of pearls or beads.^[4]
6. The edge of a blade: il filo del coltello.^[2][6][1]
7. (figurative) A tiny amount: un filo di voce, un filo di speranza.^[2][6][1]
8. (figurative) The thread, continuity of a speech or story: Ho perso il filo del discorso.^[6][4]

Word family

• filare
• fila
• affilare
• infilare
• sfilare
• filato
• filatura
• filatoio
• filanda
• filamento
• filaccia
• filetto
• filone

Related words

• ilo
• Latin filum
• French fil

Usage notes

Fixed phrases include per filo e per segno “in every detail”, essere appeso a un filo “to hang by a thread”, dare filo da torcere “to give a hard time”, and fare il filo a qualcuno “to court someone”.^[14][1][3] A separate, uncommon filo is the biological phylum, from New Latin phylum and Ancient Greek φῦλον (phûlon), recorded from 1956.^[4][14][1]

References

1. ^ a b c d e f g h i j k l m n o Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
3. ^ a b c Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
4. ^ a b c d e f g h i j k De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
5. ^ a b c d Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
6. ^ a b c d e f g h i j k l m n o Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
7. ^ a b c d e f Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
8. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 1643
9. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
10. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
11. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
12. ^ Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
13. ^ a b Stammerjohann, Harro, et al. (2008), Dizionario di italianismi in francese, inglese, tedesco, Firenze: Accademia della Crusca; online at difit.italianisticaonline.it
14. ^ a b c Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier