Main entry: worsen, decline
Definition: grow worse
Usage: Conditions in the slum worsened
Antonyms: meliorate, better, ameliorate, improve
Definition: get better
Main entry: worsen, exacerbate, exasperate, aggravate
Definition: make worse
Usage: This drug aggravates the pain
Antonyms: meliorate, improve, ameliorate, amend, better
Definition: to make better