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superannuate

verb su·per·an·nu·ate \ ˌsü-pər-ˈan-yə-ˌwāt \

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1 : to make, declare, or prove obsolete or out-of-date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
—

superannuation

play \ˌsü-pər-ˌan-yə-ˈwā-shən\ noun

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Origin and Etymology of superannuate

back-formation from superannuated

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