septuagenarian

• POS: Adjective, Noun
• HYPHEN: sep=tu=a=ge=nar=i=an

CIDE DICTIONARY

septuagenarian, n. 

 A person who is seventy years of age; a septuagenary.  [1913 Webster]

OXFORD DICTIONARY

septuagenarian, n. & adj.
--n. a person from 70 to 79 years old.
--adj. of this age.

Etymology

L septuagenarius f. septuageni distributive of septuaginta seventy

THESAURUS

septuagenarian

Father Time, L, Methuselah, Nestor, Old Paar, Sexagesima, boxcar, boxcars, centenarian, dotard, dozen, duodecimo, eighty, elder, eleven, fifteen, fifty, five and twenty, fortnight, forty, four and twenty, fourscore, fourscore and ten, fourteen, gaffer, geezer, golden-ager, gramps, grandfather, grandsire, graybeard, half a hundred, long dozen, ninety, nonagenarian, octogenarian, old chap, old codger, old dog, old duffer, old geezer, old gent, old gentleman, old man, old party, old-timer, older, oldster, pantaloon, patriarch, presbyter, quindecennial, quindecim, quindecima, quindene, score, senior citizen, seventy, sexagenarian, sexagenary, sexagesimo-quarto, sixteen, sixteenmo, sixty, sixty-four, sixty-fourmo, teens, the quiet-voiced elders, thirteen, thirty-two, thirty-twomo, threescore, threescore and ten, twelve, twelvemo, twenty, twenty-five, twenty-four, twenty-fourmo, two dozen, two weeks, twoscore, venerable sir, veteran