Etymologically

Etymology and origin of the Italian word indagine

Confidence
Established
Formation
Borrowing
First attested
1358, Domenico da Monticchiello
Borrowed from
Latin indago
Ultimate origin
Latin agō
Etymology tree
inherited borrowed derived
Latin indago
Italian indagine

Pronunciation

  • /inˈda.d͡ʒi.ne/[1]

Forms

indagine f (plural indagini)[1]

Etymology

It is a learned word, borrowed from Latin indāgō (“a ring of hunters or nets; a search”).[2][3][4][5] The Latin noun first meant a hunt in which the game was surrounded and driven into nets, and then a search or investigation.[3][5][6] It is formed from indu-, an old form of in- (“in”), and the root of agō (“to drive”) with a lengthened vowel, as in ambāgēs (“windings”).[3][7][1] The same prefix is in the words that gave indigeno, indigente, indole and industria.[3]

Sabatini–Coletti, Zingarelli and Gabrielli derive the Latin noun from the verb that gave indagare, but the OLD makes the verb a derivative of the noun.[8][9][10][7]

Earliest recorded meaning

The TLIO has one early example, in the Rime of the Sienese Domenico da Monticchiello (1358), with the sense “an order to do something”.[11] DELI's first record is in Galileo (1630–1631), for a study or analysis.[2][5] Zingarelli dates the word to 1480.[9]

Semantic evolution

Galileo's Dialogo discusses an author's dodici indagini (“twelve inquiries”) into the new star of 1572.[12][13] DELI dates the sense “careful, systematic research” to Metastasio in 1770, and “investigation” to Carducci in 1861.[2] The indagine conoscitiva, an inquiry held by a parliamentary committee to gather information, is recorded in 1973.[2]

In modern law the plural indagini is the investigation by the police and the judiciary, and the indagini preliminari are those that decide whether a prosecution is brought.[5][6] The word is also used for market research and statistical surveys.[5][6]

Timeline

  • 1358 – Domenico da Monticchiello uses the word for an order.[11]
  • 1630–1631 – Galileo uses it for a study or analysis.[2]
  • 1770 – Metastasio uses it for careful research.[2]
  • 1861 – Carducci uses it for an investigation.[2]
  • 1973 – Indagine conoscitiva is recorded.[2]

Meanings

Noun

  1. Systematic research or study to discover something: un'indagine sulle abitudini alimentari dei giovani.[5][14][8]
  2. (often plural) An investigation by the police or the judiciary: La procura ha aperto un'indagine sull'incendio.[5][14][6]
  3. A survey or poll: indagine di mercato.[5][6][1]
  4. (economics) A survey of businesses on their present situation and short-term prospects.[14]

Word family

  • indaginoso
  • preindagine

Usage notes

Giudice per le indagini preliminari, abbreviated GIP, is the judge who oversees the preliminary investigation.[6][5]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  3. ^ a b c d Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  4. ^ Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975)
  5. ^ 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
  6. ^ a b c d e f Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana
  7. ^ a b Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  8. ^ a b Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  9. ^ a b Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  10. ^ Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  11. ^ a b Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
  12. ^ Tommaseo, Niccolò; Bellini, Bernardo (1861–1879), Dizionario della lingua italiana, 4 vols., Torino: UTET
  13. ^ Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
  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

Related etymologies

Cite this entry

“Indagine.” Etymologically, 21 Oct. 2026, etymologically.com/it/indagine. Accessed 22 Oct. 2026.

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