remedy

(noun) act of correcting an error or a fault or an evil. Synonyms: redress, remediation.

(noun) a medicine or therapy that cures disease or relieve pain. Synonyms: curative, cure, therapeutic.

(verb) set straight or right. Synonyms: rectify, remediate, repair, amend. Examples: "Remedy these deficiencies." "Rectify the inequities in salaries." "Repair an oversight."

(verb) provide relief for. Synonyms: relieve. Examples: "Remedy his illness."