THESAURUS
Century
C, C-note, G, G-note, abundant year, academic year, aeon, age, ages, annum, bicentenary, bicentennial, bissextile year, buck, calendar month, calendar year, cartwheel, cent, cental, centare, centenarian, centenary, centennial, centennium, centigram, centimeter, centipede, centistere, centred, centref, centrev, centumvir, centumvirate, centurion, common year, copper, cwt, day, decade, decennary, decennium, defective year, dime, dollar, dollar bill, eternity, fifty cents, fin, fiscal year, fish, five cents, five hundred dollars, five-dollar bill, five-hundred-dollar bill, five-spot, fiver, fortnight, four bits, frogskin, grand, gross, half G, half a C, half dollar, half grand, hecatomb, hour, hundred, hundred-dollar bill, hundredweight, iron man, leap year, long, long hundred, long time, long while, lunar month, lunar year, lunation, luster, lustrum, man-hour, microsecond, mill, millennium, millisecond, minute, moment, month, month of Sundays, moon, nickel, one C, penny, quarter, quinquennium, red cent, regular year, right smart spell, sawbuck, second, semester, sesquicentenary, sesquicentennial, session, sidereal year, silver dollar, skin, smacker, solar year, sun, ten cents, ten-spot, tenner, tercentenary, tercentennial, term, thousand dollars, thousand-dollar bill, trimester, twelvemonth, twenty-dollar bill, twenty-five cents, two bits, two-dollar bill, two-spot, week, weekday, yard, year, years, years on end
ROGET THESAURUS
Century
Five
N
five, five, cinque, quint, quincux, six, half-a- dozen, half dozen, seven, eight, nine, three times three, dicker, ten, decade, eleven, twelve, dozen, thirteen, long dozen, baker's dozen, quintuplet, twenty, score, twenty-four, four and twenty, two dozen, twenty-five, five and twenty, quarter of a hundred, forty, two score, fifty, half a hundred, sixty, three score, seventy, three score and ten, eighty, four score, ninety, fourscore and ten, sestiad, hundred, centenary, hecatomb, century, hundredweight, cwt, one hundred and forty-four, gross, thousand, chiliad, millennium, thousand years, grand, myriad, ten thousand, ban, man, ten thousand years, banzai, lac, one hundred thousand, plum, million, thousand million, milliard, billion, trillion, five, quinary, quintuple, fifth, senary, sextuple, sixth, seventh, septuple, octuple, eighth, ninefold, ninth, tenfold, decimal, denary, decuple, tenth, eleventh, duodenary, duodenal, twelfth, in one's 'teens, thirteenth, vicesimal, vigesimal, twentieth, twenty-fourth, vicenary, vicennial, centuple, centuplicate, centennial, centenary, centurial, secular, hundredth, thousandth.
Period
N
period, age, era, second, minute, hour, day, week, month, quarter, year, decade, decenniumm lustrum, quinquennium, lifetime, generation, epoch, ghurry, lunation, moon, century, millennium, annus magnus, horary, hourly, annual.