nonagenarian
Definitions
A person who is between 90 and 99 years old.
Relating to or being a person in their nineties.
Examples
The sprightly nonagenarian celebrated her ninety-second birthday by going skydiving.
Despite being a nonagenarian, he still manages to tend to his garden every single morning.
The local library hosted a special event to honor the town's oldest nonagenarian.
Synonyms
elderly person senior citizen old-timer octogenarian centenarian aged person senior