octogenarian

English Thesaurus

1. someone whose age is in the eighties (noun.person)

hypernym	:	golden ager, old person, oldster, senior citizen,
definition	:	an elderly person (noun.person)

2. being from 80 to 89 years old (adj.all)

similar	:	old,
definition	:	(used especially of persons) having lived for a relatively long time or attained a specific age (adj.all)