WORSEN
worsen, decline
(verb) grow worse; “Conditions in the slum worsened”
worsen, aggravate, exacerbate, exasperate
(verb) make worse; “This drug aggravates the pain”
Source: WordNet® 3.1
Etymology
Verb
worsen (third-person singular simple present worsens, present participle worsening, simple past and past participle worsened)
(transitive) To make worse; to impair.
(intransitive) To become worse; to get worse.
(transitive, obsolete) To get the better of; to worst.
Synonyms
• (to make worse): aggravate, exacerbate; See also aggravate
• (to become worse): decline, deteriorate; See also worsen
• (to get the better of): better, defeat, overpower
Antonyms
• improve
• ameliorate
Anagrams
• Rewson, owners, resown, rowens, snower, sworne
Source: Wiktionary
Wors"en, v. t.
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.]
Wors"en, v. i.
Definition: To grow or become worse. De Quincey.
Indifferent health, which seemed rather to worsen than improve.
Carlyle.
Source: Webster’s Unabridged Dictionary 1913 Edition