* Formal: The new regulations will supersede the old ones, effective immediately.
* Informal: My new phone completely supersedes my old one – it's so much faster!
* Technical: The updated software will supersede the previous version, fixing several bugs.
* Legal: The judge's ruling will supersede any prior decisions in the case.
* Historical: The Roman Empire superseded the Greek city-states.
Supersede means to replace something older or less important with something newer or more important.