Latin

Adjective

sērius m ‎(feminine sēria, neuter sērium); first/second declension

1. grave, earnest, serious
2. (figurative) late, tardy, belated

Inflection

First/second declension.

Descendants

• English: serious
• French: sérieux, sérieuse
• Portuguese: sério
• Spanish: serio

References

• serius in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• serius in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• SERIUS in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• Félix Gaffiot (1934), “serius”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.
• Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book, London: Macmillan and Co.
  • two days late: biduo serius
    
  • (ambiguous) to say in earnest..: serio dicere (Plaut. Bacch. 1. 1. 42)
    
• serious in The Century Dictionary, The Century Co., New York, 1911