Etymologically

Etymology and origin of the Latin word peioro

Confidence
Established
Formation
Derivation
First attested
first half of the 3rd century AD, Paulus
Ultimate origin
Latin peior
Etymology tree
inherited borrowed derived
Latin peioro
Italian peggiorare

Forms

peiōrō (present infinitive peiōrāre, perfect active peiōrāvī, supine peiōrātum); first conjugation[1]

Etymology

It is from Latin peior (“worse”), the comparative of malus1, formed like meliōrō from melior (“better”).[2]

Earliest recorded meaning

It first appears in the Sententiae of the jurist Paulus (first half of the 3rd century AD),[2][3] who says that a free man may make his own status “both worse and better”, et peiorare … et meliorem facere.[2][4]

Semantic evolution

It remained a rare post-Classical word.[4] The medical writer Caelius Aurelianus uses it intransitively, chiefly in the ablative absolute: a disease or a symptom “growing worse”.[2][4] It lives on in Romance, as Italian peggiorare, Portuguese pejorar and Occitan pejorar, and English reshaped it as pejorate.[1]

Timeline

  • first half of the 3rd century AD – Paulus uses it of making one's status worse.[2][3]
  • 5th century AD – Caelius Aurelianus uses it of diseases growing worse.[2][3]

Meanings

Verb

  1. (Late Latin) To make worse, aggravate.[2][4][1]
  2. (Late Latin, intransitive, of illness) To grow worse, deteriorate.[2][4]

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press

Descendants

Cite this entry

“Peioro.” Etymologically, 24 Oct. 2026, etymologically.com/la/peioro. Accessed 24 Oct. 2026.

Last edited on . ·