noun. A person 90 years old or between 90 and 100 years old.

Containing or pertaining to ninety.

noun. A person who is ninety years old.

noun. A person ninety years old.

noun. One who is between the age of 90 and 99, inclusive. One who is in his or her tenth decade.

adjective. Being between the age of 90 and 99, inclusive. In one's tenth decade.

adjective. Of or relating to a nonagenarian.

noun. someone whose age is in the nineties

adjective. being from 90 to 99 years old

"Brown's ambition for the project is not in doubt – she has confirmed rumours of discussions between billionaire Barry Diller, the backer for her own online publication, the Daily Beast, and Newsweek's nonagenarian proprietor, Sidney Harman."

old  

golden ager  old person  oldster  senior citizen  

79-year-old  antinous  black-coated  centenarian  civil service  

Father Time  L  Methuselah  Nestor  Old Paar