young immature

civil year fiscal year Holy Year church year bissextile year time period yr period of time 365 days leap year calendar year New Year intercalary year decade decennium financial year period 366 days decennary Christian year year of grace Y2K annum common year off year twelvemonth

school year period of time period time period academic year

anomalistic year period of time equinoctial year season astronomical year sidereal year month time of year period tropical year lunar year time period solar year

sophomore class graduating class class senior class freshman class gathering assemblage junior class

ii 2 cardinal

age-old archaic used hoary antediluvian hand-me-down longtime patched noncurrent nonmodern age sunset yellow antiquated past long-ago worn immemorial yellowed rusty hand-down antique auld stale secondhand

centenarian aged over-the-hill of age grey grizzly hoary middle-aged older sexagenarian grey-haired grey-headed white-haired senior darkened aging oldish nonagenarian anile gray age ageing gaga senescent emeritus gray-haired doddery gray-headed doddering ancient senile experienced superannuated elderly overaged experient octogenarian overage hoar mature venerable

pair dyad twain duo yoke brace digit couple duet snake eyes 2 deuce distich couplet duad span twosome II craps figure

familiar