Etymologically

hydrophobicus

Etymology and origin of the Latin word hydrophobicus

Confidence
Established
Formation
Borrowing
First attested
400s Caelius Aurelianus More words from the 4th century
Borrowed from
Ancient Greek ὑδροφοβικός
Ultimate origin
Ancient Greek ὑδροφοβικός
Etymology tree
inherited borrowed derived
Latin hydrophobicus
English hydrophobic

Pronunciation

  • Classical: [hyˈdrɔ.pʰɔ.bɪk][1]
  • Ecclesiastical: [iˈdrɔː.fo.bik][1]

Forms

hydrophobicus (feminine hydrophobica, neuter hydrophobicum); first/second-declension adjective[1]

Etymology

It is borrowed from Ancient Greek ὑδροφοβικός (hudrophobikós),[1][2][3] from ὑδροφοβία (hudrophobía, “fear of water, hydrophobia”), which Köbler connects with ὕδωρ (húdōr, “water”).[4]

Earliest recorded meaning

Caelius Aurelianus, a medical writer of the 5th century AD,[4] uses it in his work on acute diseases in the phrase passio hydrophobica, the disease hydrophobia.[2][3]

Semantic evolution

The TLL defines it as afraid of water, suffering from hydrophobia, and notes that the masculine is also used as a noun for such a patient; manuscripts spell it with y-, hi- and -fob-.[5] In medieval medical texts the noun named a person afraid of water, a rabid person.[6][4]

English hydrophobic (1807) was formed from hydrophobia with -ic rather than taken from the Latin adjective.[7]

Timeline

  • 5th century AD – Caelius Aurelianus speaks of passio hydrophobica.[2][4]
  • 7th–8th century – Medical writings such as a pseudo-Galenic treatise on the pulse use the noun for a rabid person.[6][4]
  • 1807 – English forms hydrophobic from hydrophobia.[7]

Meanings

Adjective

  1. Of or relating to hydrophobia; suffering from hydrophobia.[2][3][5]
  2. (Medieval Latin, as a noun) A person who fears water, a rabid person.[6][4]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  6. ^ a b c Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  7. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Related etymologies

Cite this entry

“Hydrophobicus.” Etymologically, 14 Nov. 2026, etymologically.com/la/hydrophobicus. Accessed 14 Nov. 2026.

Last edited on . ·