/ ˌsuːpərˈænjueɪtɪd; NAmE ; BrE also ˌsjuː-/ adjective
[ usually before noun ] ( formal or humorous ) ( of people or things ) too old for work or to be used for their original purpose :
superannuated rock stars
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WORD ORIGIN
mid 17th cent.: back-formation from superannuated , from medieval Latin superannuatus , from Latin super- over + annus year + -ed .