Definition of superannuate
superannuated
;superannuating
transitive verb
1 : to make, declare, or prove obsolete or out-of-date
2 : to retire and pension because of age or infirmity
intransitive verb
1 : to become retired
2 : to become antiquated
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Origin and Etymology of superannuate
back-formation from superannuated
First Known Use: 1649
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