olemus
Wiktionary:
1. (of words, equipment, etc.) no longer in use; gone into disuse; disused or neglected (often in favour of something newer)
It is speculated that, within a few years, the Internet's speedy delivery of news worldwide will make newspapers obsolete.
Synonyms: antiquated, deprecated, disused

näiteid
obsolete act -- vananenud seadus
obsolete equipment -- vananenud seadmed
obsolete law -- vananenud seadus/õigusnorm
obsolete provision -- vananenud säte
obsolete rule -- vananenud õigusnorm
obsolete word -- vanamoeline sõna

ülevaateid
https://en.wikipedia.org/wiki/Obsolescence

vt ka
- aegunud (1)
- aegunud (2)
- aegunud (3)
- aegunud (4)
- vananenud (2)