Latin Anniversary Names

Below is a list of the Latin Anniversary names.

The root elements of each word are literally multiplied together to create the anniversary name. For example, the word Biennial (an anniversary of 2 years) is broken down as bi- (2) x ennial (years). Sometimes new anniversary names are coined incorrectly by adding the root elements rather than multiplying them, with unfortunate results.

• Annual – 1 year
• Biennial – 2 years
• Triennial – 3 years
• Quadrennial – 4 years
• Quinquennial – 5 years
• Sexennial – 6 years
• Septennial – 7 years
• Octennial – 8 years
• Novennial – 9 years
• Decennial – 10 years
• Undecennial – 11 years
• Duodecennial – 12 years
• Tredecennial – 13 years
• Quattuordecennial – 14 years
• Quindecennial – 15 years
• Vigintennial – 20 years
• Semicentennial – 50 years
• Semisesquicentennial – 75 years
• Centennial – 100 years