twelvemonth, year, yr

years, century, months, weeks, millennia, eons, seasons, twelvefold, lifetimes, nineties, generations, inception, yeas, summers, fortnight, era, days, millenium, since, heyday, yearlong, past, seventies, dozen, eighties, twenty, aeons, thirty, quadrupling, triassic period, than, aughts, time, tenure, incarnations, monthlong, fifteen, awhile, quintupling, weekend, eightfold, pliocene epoch, five, pleistocene epoch, millenia, million, sixties, billion, aprils, spring, worldwide, advent, quarters, fifty, cretaceous period, preadolescence, country, ascendence, administrations, mesozoic era, paleozoic era, wartimes, doubling, yrs, hours, renaissance, billon, jurassic period, winters, instance, januaries, history, christmases, vestige, meiji restoration, epochs, permian period, eighteen, hurray, boom, trebling, halloweens, paradigm, helm, beginnings, per capita, fall, miocene epoch, reincarnations, iteration, four, reign, devonian period, half, predecessors, oligocene epoch, postwar, carboniferous period, nation, founding, glacial, stagnation, decades, year, semester, month, installment, paragraph, yean, chapter, inning, instalment, chapters, millennium, cantos, centuries, day, hour, week, subsection, tenyear, fouryear, threeyear, twoyear, decadal, twentyyear, multiyear, oneyear, industrywide, sixyear, eightyear, threemonth, yr, intercensal, ongoing, unprecedentedly

fifties, forties, thirties, twenties

., 1530s, 1750s, 1760s, 1770s, 1780s, 1790s, 1820s, 1830s, 1840s, 1850s, 1860s, 1870s, 1880s, 1890s, 1900s, 1920s, 1930s, 1940s, 1950s, 1960s, 1970s, 1980s, 1990s, eighties, fifties, forties, nineties, population, seventies, sixties, thirties, twenties

amount of time, large integer, period, period of time, time period

10, decennary, decennium, ten, tenner, x