Definition of worsen verb from the Oxford Advanced Learner's Dictionary

 

worsen

 verb
verb
BrE BrE//ˈwɜːsn//
 
; NAmE NAmE//ˈwɜːrsn//
 
[intransitive, transitive]Verb Forms present simple I / you / we / they worsen
BrE BrE//ˈwɜːsn//
 
; NAmE NAmE//ˈwɜːrsn//
 
he / she / it worsens
BrE BrE//ˈwɜːsnz//
 
; NAmE NAmE//ˈwɜːrsnz//
 
past simple worsened
BrE BrE//ˈwɜːsnd//
 
; NAmE NAmE//ˈwɜːrsnd//
 
past participle worsened
BrE BrE//ˈwɜːsnd//
 
; NAmE NAmE//ˈwɜːrsnd//
 
-ing form worsening
BrE BrE//ˈwɜːsnɪŋ//
 
; NAmE NAmE//ˈwɜːrsnɪŋ//
 
 
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to become or make something worse than it was before The political situation is steadily worsening. Her health has worsened considerably since we last saw her. worsen something Staff shortages were worsened by the flu epidemic.Extra examples The problem has worsened considerably in recent months. Her symptoms have worsened considerably since we last saw her. With the worsening economic climate we can expect more unemployment.
See the Oxford Advanced American Dictionary entry: worsen