duplus

duplus

Latin

Latin numbers ^(edit)

[a], [b] ←  1	II 2	3  → [a], [b]
Cardinal: duo     Ordinal: secundus     Adverbial: bis     Multiplier: duplex, duplus     Distributive: bīnī     Fractional: dīmidius, sēmis

Etymology

From Proto-Italic *dwiplos, from duo +‎ plus.[1] Cf. Ancient Greek διπλόος (diplóos, “double”), from δι- (di-), from δύο (dúo, “two”), + -πλόος (-plóos, “-fold”), and Proto-Germanic *twīflaz (“doubt”).

Pronunciation

• (Classical) IPA^(key): /ˈdu.plus/, [ˈd̪ʊpɫ̪ʊs̠]
• (Ecclesiastical) IPA^(key): /ˈdu.plus/, [ˈd̪uːplus]

Adjective

duplus (feminine dupla, neuter duplum); first/second-declension adjective

1. double (twice as much, or as big)

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	duplus	dupla	duplum		duplī	duplae	dupla
Genitive	duplī	duplae	duplī		duplōrum	duplārum	duplōrum
Dative	duplō		duplō		duplīs
Accusative	duplum	duplam	duplum		duplōs	duplās	dupla
Ablative	duplō	duplā	duplō		duplīs
Vocative	duple	dupla	duplum		duplī	duplae	dupla

Derived terms

• duplō (Late or Legal Latin)

Descendants

• Gallo-Italic:
  • Lombard: dopi, dopła
  • Piedmontese: dobi
• Italo-Dalmatian
  • Italian: doppio
  • Sicilian: dupru, duplu, dùbulu
• Old French: doble (see there for further descendants)
  • French: double
  • Norman: doubl'ye
  • Walloon: dobe
• Old Occitan:
  • Catalan: doble
  • Occitan: doble
• Rhaeto-Romance
  • Friulian: dopli
  • Romansch: dubel, dobel
• Sardinian: dopiu
• Venetian: dopio, dupio
• West Iberian
  • Asturian: doble, duble, doblu, dublu
  • Old Portuguese: dobro
    • Galician: dobre
    • Portuguese: dobre, dobro
  • Spanish: doble, doblo
• → English: duple
• → Italian: duplo
• → Portuguese: duplo
• → Romanian: dublu
• → Spanish: duplo

References

• “duplus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “duplus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• duplus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette

1. De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7)‎, Leiden, Boston: Brill, →ISBN