1. old; aged; ancient; antiquated; antique; timeworn
of things, not people
かなり古いのに状態がいいんだ。It's quite old, but it's in good condition.
2. long; since long ago; time-honored
古い付き合いだ。We have a long-standing relationship.
3. of the distant past; long-ago
4. stale; threadbare; hackneyed; corny
5. old-fashioned; outmoded; out-of-date
古い体制に染まりきっている。They are completely steeped in the old system.