1. amend To amend is to change for the better by removing faults, errors, or defects, and always refers to that which at some point falls short of a standard of excellence. Advance, better, and improve Synonyms: amend, advance, correct, meliorate, rectify, ameliorate, emend, mend, reform, better, improve, mitigate, repair, cleanse, make better, purify Antonyms: aggravate, debase, harm, mar, tarnish, blemish, depress, impair, spoil, vitiate, corrupt, deteriorate, injure