nonagenarian

/ˌnoʊnəd͡ʒɪˈnɛriən/

UK: /ˌnəʊnəd͡ʒɪˈnɛːrɪən/

nonagenarian

English Noun

Definition

Synonym of ninetysomething: a person between 90 and 99 years old.

Etymology

From Latin nōnāgēnārius (“containing ninety”) + -an (suffix forming adjectives and representative nouns), either directly or via French nonagénaire, from nōnāgēnī (“ninety each”) + -ārius (“-ary”), from nōnāginta (“nine tens, ninety”).