| NONAGENARIAN | • nonagenarian n. Synonym of ninetysomething: a person between 90 and 99 years old. • nonagenarian adj. Of or related to ninetysomethings. • NONAGENARIAN n. a person whose age is in the nineties. |
| NONAGENARIANS | • nonagenarians n. Plural of nonagenarian. • NONAGENARIAN n. a person whose age is in the nineties. |
| OCTOGENARIAN | • octogenarian n. Synonym of eightysomething: a person between 80 and 89 years old. • octogenarian adj. Of or related to eightysomethings. • OCTOGENARIAN n. a person whose age is in the eighties. |
| OCTOGENARIANS | • octogenarians n. Plural of octogenarian. • OCTOGENARIAN n. a person whose age is in the eighties. |
| QUADRAGENARIAN | • quadragenarian n. Synonym of fortysomething: a person between 40 and 49 years old. • quadragenarian adj. Of or related to fortysomethings. • QUADRAGENARIAN n. a person who is forty years old, or between forty and fifty. |
| QUADRAGENARIANS | • quadragenarians n. Plural of quadragenarian. • QUADRAGENARIAN n. a person who is forty years old, or between forty and fifty. |
| QUINQUAGENARIAN | • quinquagenarian n. (Obsolete, rare) Synonym of pentecoster: an officer who commands 50 men. • quinquagenarian n. Synonym of fiftysomething: a person between 50 and 59 years old. • quinquagenarian adj. (Obsolete, rare) Of or related to command over 50 men. |
| SEPTUAGENARIAN | • septuagenarian n. Synonym of seventysomething: a person between 70 and 79 years old. • septuagenarian adj. Of or related to seventysomethings. • SEPTUAGENARIAN n. a person whose age is in the seventies. |
| SEPTUAGENARIANS | • septuagenarians n. Plural of septuagenarian. • SEPTUAGENARIAN n. a person whose age is in the seventies. |
| SEXAGENARIAN | • sexagenarian n. Synonym of sixtysomething: a person between 60 and 69 years old. • sexagenarian adj. Of or related to sixtysomethings. • SEXAGENARIAN adj. aged between sixty and seventy years old. |
| SEXAGENARIANS | • sexagenarians n. Plural of sexagenarian; Individuals in their sixth decade of life. • SEXAGENARIAN n. a person aged between fifty and sixty. |