nighthawk (English)

Where does "nighthawk" come from?

The English noun 'nighthawk' is a compound formed by combining 'night' and 'hawk'[1]. The first element descends from Middle English 'nyght'[13] and Old English 'niht'[2], which developed through Proto-West Germanic '*naht'[2] and Proto-Germanic '*nahts'[2] from the Proto-Indo-European noun '*nókʷts', meaning 'night'[2][10]. The second element comes from Middle English 'hauk'[3][7] and Old English 'hafoc' ('hawk')[3], tracing back to Proto-West Germanic '*habuk'[3][4] and Proto-Germanic '*habukaz'[3][12]. Over time, the bird name was also applied metaphorically to human nocturnal habits, describing a person who stays awake and active late into the night.

Open questions

• The ultimate origin of Proto-Germanic '*habukaz' is disputed, with proposals deriving it from Proto-Indo-European '*kap-' ('seize') or classifying it as an ancient migratory loanword. [3] [8] [9]
• Linguists debate whether Proto-Indo-European '*nókʷts' arose from a root meaning 'bare' or 'naked' instead of representing an ordinary ablauting noun. [6]

Full etymology tree

• nighthawk (English), 'A nightjar, especially Caprimulgus europaeus (Eurasian nightjar).'
  • compound night (English), 'The time when the Sun is below the horizon when the sky is dark.'
    • inherited night (Middle English), 'alternative form of nyght'
      • inherited niht (Old English), 'night'
        • inherited *naht (Proto-West Germanic), 'night'
          • inherited *nahts (Proto-Germanic), 'night'
            • inherited *nókʷts (Proto-Indo-European), 'night (or possibly 'evening')'
  • compound hawk (English), 'A diurnal predatory bird of the family Accipitridae, smaller than an eagle.'
    • inherited hauk (Middle English), 'hawk (A bird of the family Accipitridae)'
      • inherited hafoc (Old English), 'hawk'
        • inherited *habuk (Proto-West Germanic), 'hawk'
          • inherited *habukaz (Proto-Germanic), 'hawk'

Ancestors

• night (English)
• hawk (English)

Descendants and derived words

• nighthawking (English)

Sources

1. nighthawk (English) - Wiktionary
2. night (English) - Wiktionary
3. hawk (English) - Wiktionary
4. hafoc (Old English) - Wiktionary
5. niht (Old English) - Wiktionary
6. nókʷts (Proto-Indo-European) - Wiktionary
7. hauk (Middle English) - Wiktionary
8. habukaz (Proto-Germanic) - Wiktionary
9. kap- (Proto-Indo-European) - Wiktionary
10. nahts (Proto-Germanic) - Wiktionary
11. naht (Proto-West Germanic) - Wiktionary
12. habuk (Proto-West Germanic) - Wiktionary
13. nyght (Middle English) - Wiktionary

Updated October 2026

More words starting with N

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