superannuate

verb
su·per·an·nu·ate | \ˌsü-pər-ˈan-yə-ˌwāt \
superannuated; superannuating

Definition of superannuate 

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1 : to make, declare, or prove obsolete or out-of-date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

Other Words from superannuate

superannuation \ˌsü-pər-ˌan-yə-ˈwā-shən \ noun

First Known Use of superannuate

1649, in the meaning defined at transitive sense 1

History and Etymology for superannuate

back-formation from superannuated

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The first known use of superannuate was in 1649

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