adjective

1. (of words, equipment, etc.) No longer in use; gone into disuse; disused or neglected (often by preference for something newer, which replaces the subject).

   “It is speculated that, within a few years, the Internet's speedy delivery of news worldwide will make newspapers obsolete.”

2. Imperfectly developed; not very distinct.

Synonyms: abortive, obscure, rudimental, antiquated, deprecated, disused