Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class I. Words Expressing Abstract RelationsSection VI. Time
2. Time with reference to a particular Period
124. Oldness.
MATURITY, matureness, ripeness.
DECLINE, decay; senility [See Age].
SENIORITY, eldership, primogeniture.
ARCHAISM &c. (the past) [See Preterition]; thing of the past, relic of the past; megatherium; Babylonian, Assyrian, Sanskrit.
TRADITION, prescription, custom, immemorial usage, common law; folklore.
BECOME OLD &c. adj.; age, fade.
PRIMITIVE, prime, primeval, primigenous, primigenial, primigenous; paleoanthropic; primordial, primordiate [rare]; aboriginal (beginning) [See Beginning]; diluvian, antediluvian, protohistoric, prehistoric, dateless, patriarchal, preadamite; palæocrystic; fossil, paleozoic, preglacial, antemundane; archaic, Vedic, classic, medieval, Pre-Raphaelite, ancestral; black-letter.
IMMEMORIAL, traditional, traditive, traditionary [rare], prescriptive, customary, unwritten, whereof the memory of man runneth not to the contrary; inveterate, rooted.
ANTIQUATED, of other times, old as the hills, of the old school, after-age, obsolete; out-of-date, out-of-fashion; stale, old-fashioned, old-fangled [rare], fusty, outworn, moth-eaten [humorous], behind the age; old-world; exploded; gone out, gone by, passé [F.], extinct, dead, disused, past, run out; senile [See Age]; time-worn; crumbling (deteriorated) [See Deterioration]; secondhand.
old as the hills, old as Methuselah, old as Adam, old as history.