Great-granddad, or more seriously, a nonagenarian
A person in their nineties is commonly referred to as a nonagenarian.
Nonagenarian
Great-granddad, or more seriously, a nonagenarian
(nonagenarian: someone in their nineties - noun or adjective) It is harder for a nonagenarian to get a drivers license. The nonagenarian residents did not know how to use the computerized library.
You can refer to a person in their 70s as a septuagenarian.
A person who is retired is simply referred to as a retiree.
A grown person is typically referred to as an adult.
Great-granddad, or more seriously, a nonagenarian
a person in the nineties
A nonagenarian
A nanogenarian is a person between 90 and 99 years of age.
THE NINETIES - The Downsizing Decade.
Alive in the Nineties was created in 2003.
Nightmare in the Nineties was created in 2001.
The duration of Belle of the Nineties is 1.25 hours.
The duration of The Nifty Nineties is 360.0 seconds.
The duration of The Naughty Nineties is 1.27 hours.
The duration of The Lawless Nineties is 3300.0 seconds.
Ninety-seven is a prime; the remainder of the nineties are composites.