Outdated

Definition

No longer in use or considered valid. Refers to ideas, theories, or concepts that were once widely accepted but are now considered incorrect or no longer relevant.

Related terms

Obsolete: Something that is no longer in use or relevant due to newer and more advanced alternatives.

Discredited: Ideas or theories that have been proven false or lacking sufficient evidence.

Superseded: Replaced by something newer, better, or more up-to-date.