| longstanding |
| longtime |
| lost(adjective, dead, past, previous, former) |
| mature(tired, gray, aged, older, elderly) |
| matured(tired, gray, mature, aged, older) |
| moldy(adjective, odd, old, primitive, unfashionable) |
| neglected(adjective, odd, old, primitive, unfashionable) |
| not current(expression, odd, old, primitive, unfashionable) |
| not modern(expression, odd, old, primitive, unfashionable) |
| not with it(expression, idiom, odd, old, primitive) |
| not young(expression, tired, gray, mature, aged) |
| odd(adjective, old, primitive, unfashionable, outdated) |
| of olden days(expression, idiom, odd, old, primitive) |
| of the old school(expression, idiom, odd, old, primitive) |
| old-fangled(adjective, odd, old, primitive, unfashionable) |
| old-hat(adjective, odd, old, primitive, unfashionable) |
| old-world |
| old as Methuselah(adjective, idiom, new, old) |
| old as the hills(adjective, idiom, new, old) |
| olden days(expression, adjective, late, old, past) |