C, Father Time, Methuselah, Nestor, Old Paar, bicentenary, bicentennial, cental, centare, centenary, centennial, centennium, centigram, centimeter, centipede, centistere, centred, centref, centrev, centumvir, centumvirate, centurion, century, cwt, dotard, elder, gaffer, geezer, golden-ager, gramps, grandfather, grandsire, graybeard, gross, hecatomb, hundred, hundredweight, long hundred, nonagenarian, octogenarian, old-timer, old chap, old codger, old dog, old duffer, old geezer, old gent, old gentleman, old man, old party, older, oldster, one C, pantaloon, patriarch, presbyter, senior citizen, septuagenarian, sesquicentenary, sesquicentennial, sexagenarian, tercentenary, tercentennial, the quiet-voiced elders, venerable sir, veteran