Obsolete (adjective)

1. No longer in use or no longer useful.
2. Outdated or old-fashioned.
3. No longer produced or no longer produced in the same way.

Origin:

From latin obsoletus (fallen into disuse), from obsolescere (to fall into disuse), from ob (in the way of) + soles (solitary).

Examples:

1. The obsolete technology was replaced by newer and more advanced systems.
2. The obsolete fashion trend from the 80s has made a comeback.
3. The obsolete law was abolished after it was found to be unconstitutional.
4. The obsolete machine was replaced by a newer and more efficient model.
5. The obsolete currency was taken out of circulation and replaced with a new one.