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Alternative forms[edit]


From earlier auctumnus, of unclear ultimate origin:

Possibly influenced by auctus (enriched, enlarged, ample).



autumnus m (genitive autumnī); second declension

  1. autumn, fall


Second-declension noun.

Case Singular Plural
Nominative autumnus autumnī
Genitive autumnī autumnōrum
Dative autumnō autumnīs
Accusative autumnum autumnōs
Ablative autumnō autumnīs
Vocative autumne autumnī


autumnus (feminine autumna, neuter autumnum); first/second-declension adjective

  1. (relational) autumn; autumnal


First/second-declension adjective.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative autumnus autumna autumnum autumnī autumnae autumna
Genitive autumnī autumnae autumnī autumnōrum autumnārum autumnōrum
Dative autumnō autumnō autumnīs
Accusative autumnum autumnam autumnum autumnōs autumnās autumna
Ablative autumnō autumnā autumnō autumnīs
Vocative autumne autumna autumnum autumnī autumnae autumna


Several are learned.


  • autumnus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • autumnus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
  1. ^ De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7)‎[1], Leiden, Boston: Brill, →ISBN
  2. ^ Roberts, Edward A. (2014) A Comprehensive Etymological Dictionary of the Spanish Language with Families of Words based on Indo-European Roots, Xlibris Corporation, →ISBN
  3. ^ Tucker, T.G., Etymological Dictionary of Latin, Ares Publishers, 1976 (reprint of 1931 edition).