Etymologically

Etymology and origin of the Italian word guastare

Confidence
Probable
Formation
Inherited
First attested
1175–1200 late 12th century, Venetian Proverbia que dicuntur More words from the 12th century
Inherited from
Latin vasto
Ultimate origin
Latin vastus
Etymology tree
inherited borrowed derived
Latin vāstus
French vaste
Latin vāstō
French gâter
Italian guastare
Spanish gastar
From the same root
Latin vāstitās ← vāstus
Latin vāstum ← vāstus
Latin dēvāstō ← vāstō
Latin vastatio ← vāstō

Pronunciation

  • /ɡwasˈta.re/[1]

Forms

guastare (first-person singular present guàsto, first-person singular past historic guastài, past participle guastàto, auxiliary avére)[1] Old Italian also had vastare, with the Latin consonant.[2][3] Old forms with ⟨g⟩ alone, such as Old Italian gasto, are found beside Old Italian ghuastare.[4]

Etymology

It is inherited from Latin vastō (“to lay waste”), derived from vastus (“empty, desolate”).[2][5][6][1] The initial /gw/ for Latin /w/ is the treatment of Germanic words such as guado and guaina.[5][7][8] DELI, DEI and Wiktionary explain it by crossing with a Germanic word of the same root, Frankish *wōstijan (“to lay waste”) (Old High German wuosti (“desert”), modern wüst).[2][9][1][10] Nocentini doubts the identification, because the Germanic word has /oː/ where the Romance word has /a/.[5] Rohlfs counts the word among the few in which Latin /w/ was treated like Germanic /w/.[11]

The same verb is French gâter, and Occitan gastar, Catalan gastar, Spanish gastar and Portuguese gastar.[5][10]

De Vaan reconstructs Proto-Italic *wāsto- and PIE *h₁u(e)h₂-sto- for the adjective, and notes that the length of the vowel is uncertain.[12]

Earliest recorded meaning

The TLIO's first record is in the Venetian Proverbia que dicuntur, of the late 12th century, for damaging a thing so that it is no longer whole or sound.[4] The Latin-looking vastare appears in the 13th century in Inghilfredi and the Miracole de Roma;[2] DELI's first guastare, in Restoro d'Arezzo (1282), means “to reduce to a bad state”.[2]

Semantic evolution

In Old Italian the verb meant to lay waste a country or a town, as in Bono Giamboni before 1292, and the noun guasto the devastation; to mutilate (Dante); and in Boccaccio to corrupt.[2][11][13] The military guastatore, who destroyed fortifications, is in Malispini and was revived in the Second World War.[2]

Later uses are more domestic: food that goes off (Giovanni Villani), things that break, a mood or a friendship spoiled; in 1939–40 Palazzi records the sense of unpicking a garment to make it again.[2][6] The old senses “to destroy” and “to put to death” are now obsolete.[13][1] Phrases include guastare la festa, the source of guastafeste “spoilsport” (1618), and non guasta “it does no harm”.[2][6]

Timeline

  • Late 12th century – First record, in the Venetian Proverbia que dicuntur.[4]
  • 13th century – Vastare appears in Inghilfredi and the Miracole de Roma.[2]
  • 1280 – A Medieval Latin form of guastatore is recorded at Padua.[2]
  • 1282 – Restoro d'Arezzo uses guastare and guastarsi.[2]
  • Before 1292 – Bono Giamboni uses the verb for destroying and guasto for devastation.[2]
  • 1300–1313 – Dante uses guastatore and the verb for mutilating.[2]
  • 1348–1353 – Boccaccio uses it for corrupting.[2]
  • 1618 – Guastafeste is recorded.[2]
  • 1846 – Cesare Balbo uses guastarsi for falling out with someone.[2]
  • 1955 – Guasto “breakdown” is recorded.[2]

Meanings

Verb

  1. To break, make unusable: Mio fratello ha guastato la lavatrice.[6][14][15]
  2. To spoil, damage, ruin: L'umidità ha guastato i muri.[6][14][15]
  3. To harm the body or a bodily function: guastare la digestione.[6][14]
  4. To make food go bad.[6][14][15]
  5. (figurative) To corrupt, lead astray.[6][15][1]
  6. To mar, disfigure.[6][16]
  7. To disturb, upset; to break off a relationship; to wreck plans: guastare la festa.[6][15][16]
  8. Used absolutely, chiefly in the negative: to do harm: Un po' di prudenza non guasta.[6][15]
  9. To unpick a piece of knitting or a garment in order to remake it.[6][17][1]
  10. (obsolete) To lay waste, destroy; to mutilate; to put to death.[6][17][1]
  11. (pronominal, guastarsi) To break down, stop working; of food, to go bad; of weather or relations, to get worse.[15][17]
  12. (pronominal, guastarsi) Of a person, to become corrupted; of two people, to fall out.[15][17][2]

Word family

  • guasto
  • guastafeste
  • guastamestieri
  • guastatore
  • guastamento
  • guastatura

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r s Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  3. ^ Prati, Angelico (1951), Vocabolario etimologico italiano, Milano: Garzanti, p. 539
  4. ^ a b c Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
  5. ^ a b c d Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  6. ^ a b c d e f g h i j k l m De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  7. ^ Prati, Angelico (1951), Vocabolario etimologico italiano, Milano: Garzanti
  8. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
  9. ^ Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 1888
  10. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  11. ^ a b Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
  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 Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
  14. ^ 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
  15. ^ a b c d e f g h Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  16. ^ a b Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  17. ^ a b c d Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana

Related etymologies

Cite this entry

“Guastare.” Etymologically, 10 Nov. 2026, etymologically.com/it/guastare. Accessed 10 Nov. 2026.

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