Translation

取って代わる / 置き換える / 失効させる

Meaning

Supersede means to replace something older, less effective, or no longer valid. It is common in rules, contracts, manuals, technology, and official notices. The learner trap is spelling it supercede, even though the standard spelling is supersede.

Examples

• 新しいガイドラインが前の版に取って代わりました。
  The new guidelines supersede the previous version.
• この契約は以前のすべての合意に優先します。
  This contract supersedes all earlier agreements.