How to pronounce obsolete:
Example: "Obsolete words"
(of words, equipment, etc.) no longer in use; gone into disuse; disused or neglected (often by preference for something newer, which replaces the subject).
Example: "It is speculated that, within a few years, the internet's speedy delivery of news worldwide will make newspapers obsolete."
Imperfectly developed; not very distinct.
To cause to become obsolete.
Example: "This software component has been obsoleted."