firstborn(n = noun.person) eldest - the offspring who came first in the order of birth;
is a kind of issue, offspring, progeny
Derived form adjective firstborn1
firstborn(s = adj.all) eldest - first in order of birth; "the firstborn child"
Derived form noun firstborn1
The first child born to a parent; as, his firstborn was showered with gifts from relatives. [PJC]
First brought forth; first in the order of birth; eldest; hence, most excellent; most distinguished or exalted; as, the firstborn child. [1913 Webster]
N oldness, age, antiquity, cobwebs of antiquity, maturity, decline, decay, senility, seniority, eldership, primogeniture, archaism, thing of the past, relic of the past, megatherium, Sanskrit, tradition, prescription, custom, immemorial usage, common law, old, ancient, antique, of long standing, time-honored, venerable, elder, eldest, firstborn, prime, primitive, primeval, primigenous, paleolontological, paleontologic, paleoanthropological, paleoanthropic, paleolithic, primordial, primordinate, aboriginal, diluvian, antediluvian, protohistoric, prehistoric, antebellum, colonial, precolumbian, patriarchal, preadamite, paleocrystic, fossil, paleozoolical, paleozoic, preglacial, antemundane, archaic, classic, medieval, Pre-Raphaelite, ancestral, black-letter, immemorial, traditional, prescriptive, customary, whereof the memory of man runneth not to the contr, inveterate, rooted, antiquated, of other times, rococo, of the old school, after-age, obsolete, out of date, out of fashion, out of it, stale, old-fashioned, behind the age, old-world, exploded, gone out, gone by, passe, run out, senile, time worn, crumbling, secondhand, old as the hills, old as Methuselah, old as Adam, old as history, Archeozoic, Proterozoic, Paleozoic, Mesozoic, Cenozoic, Precambrian, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous, Tertiary, Paleogene, Neocene, Quaternary, Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, Recent, since the world was made, since the year one, since the days of Methuselah, vetera extollimus recentium incuriosi.
N age, oldness, old age, advanced age, golden years, senility, senescence, years, anility, gray hairs, climacteric, grand climacteric, declining years, decrepitude, hoary age, caducity, superannuation, second childhood, second childishness, dotage, vale of years, decline of life, sear and yellow leaf, threescore years and ten, green old age, ripe age, longevity, time of life, seniority, eldership, elders, firstling, doyen, father, primogeniture, geriatrics, nostology, aged, old, elderly, geriatric, senile, matronly, anile, in years, ripe, mellow, run to seed, declining, waning, past one's prime, gray, gray-headed, hoar, hoary, venerable, time-worn, antiquated, passe, effete, decrepit, superannuated, advanced in life, advanced in years, stricken in years, wrinkled, marked withthe crow's foot, having one foot in the grave, doting, like the last of pea time, older, elder, eldest, senior, firstborn, turned of, years old, of a certain age, no chicken, old as Methuselah, ancestral, patriarchal, gerontic, give me a staff of honor for my age, bis pueri senes, peu de gens savent elre vieux, plenus annis abiit plenus honoribus, old age is creeping on apace, slow-consuming age, the hoary head is a crown of glory, the silver livery of advised age, to grow old gracefully, to vanish in the chinks that Time has made.