Worsen — Defs

01 v. t. To make worse; to deteriorate; to impair.

1.
To make worse; to deteriorate; to impair.
“It is apparent that, in the particular point of which we have been conversing, their condition is greatly worsened.” — Southey.
2.
To get the better of; to worst.[R.]

02 v. i. To grow or become worse.

1.
To grow or become worse.
“Indifferent health, which seemed rather to worsen than improve.” — Carlyle.