noun
amendment
uh-MEND-munt/əˈmendmənt/
A formal change or addition to a law, document, or proposal.
An attached paragraph adds an amendment to the document.

Etymology
Removing faults gives the broader idea of improvement, the original meaning of amendment. In legal use, this narrowed to correcting errors and altering a bill or document to remove its faults.
In context
an amendment, an addendum that modifies, clarifies, or revokes certain clauses in your original will while leaving the remainder intact.
More examples
- They approved an amendment extending the deadline.
- The contract includes a written amendment.
- She introduced an amendment to the club's rules.
Forms
amendment · amendments
amend verb — make a formal correction or change