Etymologically

incastrare

Etymology and origin of the Italian word incastrare

Confidence
Probable
Formation
Inherited
First attested
1321 before 1321, Dante, Rime More words from the 14th century
Inherited from
Latin *incastro
Ultimate origin
Vulgar Latin *incastrō

Pronunciation

  • /in.kasˈtra.re/[1]

Forms

incastrare (first-person singular present incàstro, first-person singular past historic incastrài, past participle incastràto, auxiliary avére)[1]

Etymology

It is inherited from Vulgar Latin *incastrāre, formed with in- (“in, into”) and castrō (“to cut”), so properly “to put into a notch”.[2][3][4][5][6] DEI takes it from Christian Latin, where Late Latin incastrāre is found in the Vulgate.[7][8] Another view links it with Latin castrum (“fortress”) instead: Wiktionary, after Körting, separates it from castrare, and the Treccani dictionary gives both explanations.[1][9][10]

From Italian come French encastrer, recorded about 1580, and Spanish engastar “to set in gold”.[3][6][11] REW also lists Romansh enkastrer, Occitan encastrar and Portuguese encastrar “to mortise”.[6] The Latin verb is derived from a noun for a cutting tool, Proto-Italic *kastro-, from Proto-Indo-European *ḱs-tro- (“knife”), to the root Proto-Indo-European *ḱes- (“to cut”).[12]

Earliest recorded meaning

The first record is in Dante's Rime, before 1321, where the verb seems to have the figurative sense of the Occitan encastrar, “to fix in the mind”.[2][13] The TLIO also records the concrete sense, to fit a projecting piece into a hollow one so that they make a single whole.[13]

Semantic evolution

The concrete sense of joining pieces by fitting one into another is common from the 16th century: Benvenuto Cellini, before 1571, describes how the hip bones are set on the thigh bone.[2][14] The intransitive pronominal incastrarsi, of a thing that gets stuck so that it cannot come out, is recorded before 1537 in Biringuccio.[2] The noun incastro, a slot into which a piece fits, is recorded before 1654, and Medieval Latin incastrum already appears at Bologna in 1259.[2]

The colloquial sense “to put someone in a fix” is recorded in 1963, in Vasco Pratolini.[2] From it come “to trap a suspect with evidence” and, jokingly, “to trap a man into marriage”.[8][10]

Timeline

  • Before 1321 – Dante uses incastrare in his Rime.[2][13]
  • Before 1537 – Vannoccio Biringuccio uses the pronominal incastrarsi.[2]
  • Before 1571 – Benvenuto Cellini uses the verb for fitting bones or pieces together.[2]
  • c. 1580 – French encastrer is first recorded.[11]
  • Before 1654 – The noun incastro is first recorded.[2]
  • 1963 – Vasco Pratolini uses the verb for putting someone in a fix.[2]

Meanings

Verb

  1. (transitive) To fit or wedge something into a notch or a space, fixing it firmly; to join two pieces by fitting one into the other: incastrare le assi del pavimento.[8][15][16][17]
  2. (transitive, figurative) To fit something into a context or a busy schedule: Cercherò di incastrare la riunione tra due appuntamenti.[15][10]
  3. (transitive, figurative, colloquial) To put someone in a situation with no way out; to frame or trap a suspect with conclusive evidence: Le registrazioni hanno incastrato il ladro.[8][15][16][1]
  4. (transitive, colloquial, humorous) To trap someone, especially a man, into marriage.[8][18]
  5. (intransitive) To fit exactly into a cavity: Questo pezzo incastra alla perfezione.[8][15][17]
  6. (pronominal, incastrarsi) To fit firmly into something; to get stuck: La chiave si è incastrata nella serratura.[16][17][10]

Word family

  • incastro
  • incastramento
  • incastratura
  • incastrato
  • incastratrice
  • disincastrare
  • rincastrare

Usage notes

The intransitive use takes the auxiliary avere.[17][18] Incastrare una gemma means to set a gem, like incastonare.[17]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  3. ^ a b Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  4. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
  5. ^ Prati, Angelico (1951), Vocabolario etimologico italiano, Milano: Garzanti, p. 552
  6. ^ a b c Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  7. ^ Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 1983
  8. ^ a b c d e f De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  9. ^ Körting, Gustav (1907), Lateinisch-romanisches Wörterbuch: etymologisches Wörterbuch der romanischen Hauptsprachen, 3rd ed., Paderborn: Schöningh
  10. ^ a b c d Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
  11. ^ a b Stammerjohann, Harro, et al. (2008), Dizionario di italianismi in francese, inglese, tedesco, Firenze: Accademia della Crusca; online at difit.italianisticaonline.it
  12. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  13. ^ a b c Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
  14. ^ Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca, p. 7, 634
  15. ^ a b c d Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  16. ^ a b c Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  17. ^ a b c d e Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  18. ^ a b Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana

Related etymologies

Cite this entry

“Incastrare.” Etymologically, 14 Nov. 2026, etymologically.com/it/incastrare. Accessed 15 Nov. 2026.

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