A person between 10 and 19 years old is called a denarian
A person between 20 and 29 years old is a vicenarian
A person between 30 and 39 is a tricenarian
A person between 40 and 49 is a quadragenarian
A person between 50 and 59 is a quinquagenarian
A person between 60 and 69 is a sexagenarian
A person between 70 and 79 is a septuagenarian
A person between 80 and 89 is an octogenarian
A person between 90 and 99 is a nonagenarian
A person between 100 and 109 is a centenarian
Anyone that is 110 and above is a supercentenarian.
Now, you know.
