nijlpaard (Dutch)

Where does "nijlpaard" come from?

The Dutch noun 'nijlpaard' is formed from 'Nijl' meaning 'Nile' and 'paard' meaning 'horse'[1]. This construction acts as a loose calque of the Latin 'hippopotamus'[1], which descends from the Ancient Greek 'ἱπποπόταμος'[2]. That classical term breaks down into 'ἵππος' meaning 'horse' and 'ποταμός' meaning 'river'[2], effectively naming the animal a river horse. This lexical path is mirrored in German with the equivalent 'Nilpferd'[1].

Open questions

• The irregular vowel, breathing mark, and double consonant in the Ancient Greek word for horse are unexplained, leading to the possibility of a borrowing from another Indo-European language. [4]
• The derivation of the Proto-Indo-European word for horse from an adjective meaning swift is debated, with alternative theories suggesting borrowing from North Caucasian or Proto-Yeniseian. [6]
• The exact Proto-Indo-European root and morphological origin of the Ancient Greek word for river remain uncertain, with several competing theories connecting it to roots meaning to fall, to spread out, or to fly. [5]

Full etymology tree

• nijlpaard (Dutch), 'common hippopotamus (Hippopotamus amphibius)'
  • compound Nijl (Dutch), 'Nile (river)'
    • inherited Nilus (Latin), 'the Nile (river)'
      • inherited Νεῖλος (Neîlos) (Ancient Greek), 'the river Nile'
        • inherited (Semitic)
  • compound paard (Dutch), 'horse (Equus caballus or Equus ferus)'
    • inherited pert, pāert (Middle Dutch)
      • inherited *pered, *perid (Old Dutch)
        • inherited *parafred (Proto-West Germanic), 'horse'
          • inherited paraveredus (Latin), 'a horse for travel off public roads or to out of the way places'
  • calque hippopotamus (Latin), 'a hippopotamus'
    • inherited ἱπποπόταμος (hippopótamos) (Ancient Greek), 'hippopotamus'

Ancestors

• hippopotamus (Latin)
• ἱπποπόταμος (Ancient Greek)

Cognates and doublets

• Nilpferd (German)

Descendants and derived words

• kuda nil (Indonesian)
• dwergnijlpaard (Dutch)

Sources

1. nijlpaard (Dutch) - Wiktionary
2. hippopotamus (Latin) - Wiktionary
3. ἱπποπόταμος (hippopótamos) (Ancient Greek) - Wiktionary
4. ἵππος (Ancient Greek) - Wiktionary
5. ποταμός (Ancient Greek) - Wiktionary
6. h₁éḱwos (Proto-Indo-European) - Wiktionary
7. peth₂- (Proto-Indo-European) - Wiktionary
8. íkkʷos (Proto-Hellenic) - Wiktionary
9. Nijl (Dutch) - Wiktionary
10. paard (Dutch) - Wiktionary

Updated September 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris