Sexagenarian
/ˌsɛksədʒəˈnɛəriən/noun
A person between 60 and 69 years old.
Did you know?Its core comes from Latin *sexāgēnārius*, a term built on the number sixty, and the same ancient number family also gave English words like six and sixty through deep Indo-European roots.
Etymological Timeline
Proto-Indo-European
PIE
*swéḱs
“six”
Latin
Latin
sex
“six”
Latin
Latin
sexāgēnārius
“of sixty; sixty years old”
Late Latin
Latin
sexagenarius
“a person sixty years old”
Middle English
English
sexagenarie
“a person in his or her sixties”
Modern English
English
sexagenarian
“a person between 60 and 69 years old”