First Known Use: 14th century
Dictionary
ides
noun plural but singular or plural in construction \ˈīdz\
: the 15th day of March, May, July, or October or the 13th day of any other month in the ancient Roman calendar
Full Definition of IDES
: the 15th day of March, May, July, or October or the 13th day of any other month in the ancient Roman calendar; broadly : this day and the seven days preceding it
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Origin of IDES
Middle English, from Anglo-French, from Latin idus
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