superannuity
/ˌsuːpərəˈnjuːɪti/ /ˌsjuːpərəˈnjuːɪti/rare
noun
1The state or condition of being superannuated.
2Money, or an allowance, sum, or pension, paid to a person on retirement.
Origin
Late 18th century; earliest use found in William Cowper (1731–1800), poet and letter-writer. Alteration of superannuation after annuity.