Etymologically

Etymology and origin of the Latin word erus

Confidence
Probable
Formation
Inherited
First attested
c. 250–184 BC, Plautus
Inherited from
Proto-Italic *eso-
Ultimate origin
Proto-Indo-European (*h₁esh₂-ó-)

Pronunciation

  • Classical: [ˈɛ.rʊs][1]
  • Ecclesiastical: [ˈɛː.rus][1]

Forms

erus m (genitive erī, feminine era); second declension[1] It is also spelled herus, but erus is the spelling of the best manuscripts.[2][3]

Etymology

It is inherited from Proto-Italic *eso- (“master”), inherited from Proto-Indo-European *h₁esh₂-ó- (“master”), according to de Vaan and Wiktionary.[4][1] The best match in form and meaning is Hittite išhā- (“master, lord”); de Vaan also mentions the Gaulish god Esus, and Pokorny's link with Ancient Greek ἐύς (eús, “good, noble”), “the good one”, which he finds less convincing.[4] The OLD calls the origin doubtful.[2] Lewis & Short proposed a connection with hērēs (“heir”) and hirūdō (“leech”) and a root meaning “to seize”.[3][1]

Earliest recorded meaning

Plautus, Pseudolus: sī quis erum servos spernit, “if any slave scorns his master”.[2][4]

Semantic evolution

Erus is a man seen in relation to his slaves and servants, the master, especially the head of a household;[2] Plautus distinguishes maior erus, the master of the house, from minor erus, his son: maior apud forumst, minor hic est intus, “the elder is at the forum, the younger is in here”.[2] Catullus uses it of the gods and of the owner of a property, greeting Sirmio: erō gaudē, “rejoice in your master”, and Statius of the master a horse obeys.[2] Wiktionary adds husband, ruler and god.[1] The feminine is era, “mistress”.[4][1]

Timeline

  • c. 250–184 BC – Plautus of masters and slaves.[2][5]
  • 81/79–52/50 BC – Catullus of the gods and of Sirmio's owner.[2][5]
  • c. 45–96 AD – Statius of a horse's master.[2][5]

Meanings

Noun

  1. The master of a household; a master (of slaves).[2][1]
  2. (poetic) A lord, god; a ruler.[2][1]
  3. The owner (of property or an animal); a husband.[2][1]

Word family

  • era
  • erifuga
  • erīlis
  • eritūdō

References

  1. ^ a b c d e f g h i j Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de

Related etymologies

  • remus · also from Proto-Indo-European
  • quinque · also from Proto-Indo-European
  • quies · also from Proto-Indo-European
  • purus · also from Proto-Indo-European
  • plecto · also from Proto-Indo-European
  • plaga · also from Proto-Indo-European
  • ops · also from Proto-Indo-European
  • novem · also from Proto-Indo-European
Cite this entry

“Erus.” Etymologically, 18 Oct. 2026, etymologically.com/la/erus. Accessed 19 Oct. 2026.

Last edited on . ·