Etymologically

Etymology and origin of the Italian word fidare

Confidence
Established
Formation
Inherited
First attested
12th century
Inherited from
Latin *fido
Ultimate origin
Proto-Indo-European *bʰeydʰ-

Pronunciation

Forms

fidare (first-person singular present fìdo, first-person singular past historic fidài, past participle fidàto, auxiliary avére)[1] Old Italian also had fedare.[2]

Etymology

It is inherited from Vulgar Latin *fīdāre (“to trust”), a first-conjugation remodelling of Latin fīdere (“to trust”).[3][1][4][5] Devoto–Oli, Gabrielli, Treccani and Devoto explain the Vulgar Latin verb rather as formed on the adjective fīdus (“faithful”), the source of fido.[6][7][8][9] DEI compares the noun fīdāmen in Tertullian.[5]

The verb is panromance except in Romanian: French fier, Old Occitan fizar, Catalan fiar, Spanish fiar, Portuguese fiar and Engadine fider.[3][10][5] Derivatives such as fidanza and fidanzare have counterparts in French fiance and French fiancer, and sfidare in French défier and Spanish desafiar.[10]

The Latin verb, the adjective fīdus and the noun fidēs (“trust”) (the source of fede) go back to the Proto-Indo-European root *bʰeydʰ- (“to trust”).[11][3] The root is also found in Ancient Greek πείθομαι (peíthomai, “to be persuaded, obey”).[11][3] Nocentini and de Vaan also compare Gothic 𐌱𐌹𐌳𐌾𐌰𐌽 (bidjan, “to pray, ask”) or 𐌱𐌴𐌹𐌳𐌰𐌽 (beidan, “to wait”) respectively.[11][3]

Earliest recorded meaning

Nocentini and Devoto–Oli date the verb to the 12th century.[3][6] Zingarelli has it before 1257 and GRADIT about 1274.[12][4] DELI's first record of the reflexive fidarsi “to have faith, trust” is in Brunetto Latini (before 1294), and of the transitive fidare “to entrust” in Boccaccio, about 1336.[13] Sabatini–Coletti dates the pronominal use to the 13th century.[14]

Semantic evolution

From “entrust” the transitive verb developed commercial senses: to give goods or money on credit, and, rarely, to let a pasture for grazing; a fida (1492) was a grazing lease.[4][12][3] An archaic sense was “to guarantee safe conduct”.[4][6] Cellini asks the Pope how he can entrust jewels of such value to a young man who is all fire.[2]

In modern Italian the transitive verb is uncommon or literary, replaced by affidare; the intransitive fidare in “to trust in” survives (fidare in Dio), and the everyday form is the pronominal fidarsi di “to trust”.[4][6][8] Colloquially, non mi fido a means “I don't dare to”.[6][14]

Timeline

  • 12th century – Fidare is first recorded.[3][6]
  • Before 1294 – Brunetto Latini uses fidarsi “to trust”.[13]
  • About 1336 – Boccaccio uses fidare “to entrust”.[13]
  • 1492 – Fida “grazing lease” is recorded.[3]
  • 1781 – Fido “credit” is recorded.[3]
  • 1836 – Fidente “trusting” is recorded.[3]

Meanings

Verb

  1. (transitive, uncommon or literary) To entrust something or someone to another's care: Le fidò le chiavi di casa prima di partire.[4][6][12]
  2. (transitive, commerce) To give on credit: Il fornitore gli ha fidato una partita di vino.[4][6][12]
  3. (transitive, rare) To let land for grazing.[4][12][7]
  4. (intransitive) To have faith, trust (+ in): fidare nella propria buona stella.[4][6][8]
  5. (pronominal: fidarsi) To trust, rely on (+ di): Puoi fidarti di lei, è una persona seria.[6][14][12]
  6. (pronominal, colloquial) To dare, feel able to do something (+ a or di and infinitive): Non mi fido a guidare con questa nebbia.[6][14][8]

Word family

  • fidato
  • fidarsi
  • affidare
  • confidare
  • diffidare
  • fidanza
  • fidente
  • fida
  • fidatezza
  • rifidare

Usage notes

The proverb fidarsi è bene, non fidarsi è meglio “to trust is good, not to trust is better” advises caution.[6][12][8] The past participle fidato is used as an adjective, “trusty, reliable”.[3][8]

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
  3. ^ a b c d e f g h i j k l Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  4. ^ a b c d e f g h i De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  5. ^ a b c Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 1634
  6. ^ a b c d e f g h i j k l Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  7. ^ a b Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  8. ^ a b c d e f Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana
  9. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
  10. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  11. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  12. ^ a b c d e f g Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  13. ^ a b c Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  14. ^ a b c d Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse

Related etymologies

  • no · also from Latin
  • cosa · also from Latin
  • a · also from Latin
  • mio · also from Latin
  • uno · also from Latin
  • si · also from Latin
  • sapere · also from Latin
  • fare · also from Latin
Cite this entry

“Fidare.” Etymologically, 22 Oct. 2026, etymologically.com/it/fidare. Accessed 23 Oct. 2026.

Last edited on . ·