Synonyms for Old:

adj.

advanced in age (adjective)
aged, exhausted, impaired, seasoned, grizzled, inactive, infirm, geriatric, ancient, olden, veteran, mature, venerable, gray, hoary, elderly, matured, tired, senile, versed, experienced, superannuated.
aged (adjective)
geriatric, durable, matured, mature, elderly, superannuated, vintage, aged, octogenarian, ripe, ancient, venerable, advanced.
continuing (adjective)
perdurable, long-lived.
fusty (adjective)
fusty.
old (adjective)
primeval, archaic, primordial, primitive, paleolithic, ancient, venerable, antiquated, timeworn, aged, antique, elderly, antediluvian.
past (adjective)
past, historical, yore, previous, old-time, ancient, primordial, bygone, yesterday's, anteceding, former, primeval, ago.
traditional, long-established (adjective)
long-lived, perennial, long-lasting, continuing, practiced, enduring, time-honored, vintage.
veteran (adjective)
veteran.

n.

enduring, continue, long-lasting, lasting, continuing, perennial, persistent, ancestor, long-lived, perdurable, antiquity, permanent, abiding. inefficient, ineffective, faulty, pathetic, futile, worthless, purposeless, pointless, defective, timeworn. outdated, methuselah, pass, outmoded, oldster, the aged, the old, dowdy, pensioner, old folk, fusty, the elderly, dated. versed, ability, seasoned, experienced, veteran, practiced. cherished (noun)
beloved, dear, good.
grownup (noun)
adult, experienced, grown.
out-of-date (noun)
old fashioned, outmoded.
wonderful (noun)
magnificent, superb, great, excellent.

Other synonyms:

long-lived, enduring, perennial, perdurable, fusty, traditional, worn, age, remote, seasoned, continuing, versed, abiding. under, persistent. at. lasting. decayed
weather-beaten.
dilapidated
broken-down.
hereditary
ancestral.
out-of-date
outmoded.
outmoded
outdated.
run-down
dilapidated.
silvery
grizzled.

Usage examples for old

  1. You dear old thing! – From the Housetops by George Barr McCutcheon
  2. I wonder what old Seagrave will make of it? – In the Mayor's Parlour by J. S. (Joseph Smith) Fletcher
  3. This was more like the Macleod of old – Macleod of Dare by William Black