1630s, "obsolete, out of date;" 1740, "retired on account of old age," from Modern Latin superannuatus, alteration (perhaps by influence of annual) of Medieval Latin superannatus (which meant "more than a year old" and was used of cattle), from Latin super "beyond, over" (see super-) + annus "year" (see annual (adj.)). Earlier in same sense was superannate (c. 1600), from Medieval Latin superannatus. Compare French suranner.
实用例句
1. Nothing is more tiresome than a superannuated pedagogue.
老朽无能的学究最令人讨厌不过。
来自辞典例句
2. Are you still riding that superannuated old bike?