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

     

    weaken

     verb
    verb
    BrE BrE//ˈwiːkən//
     
    ; NAmE NAmE//ˈwiːkən//
     
    Verb Forms present simple I / you / we / they weaken
    BrE BrE//ˈwiːkən//
     
    ; NAmE NAmE//ˈwiːkən//
     
    he / she / it weakens
    BrE BrE//ˈwiːkənz//
     
    ; NAmE NAmE//ˈwiːkənz//
     
    past simple weakened
    BrE BrE//ˈwiːkənd//
     
    ; NAmE NAmE//ˈwiːkənd//
     
    past participle weakened
    BrE BrE//ˈwiːkənd//
     
    ; NAmE NAmE//ˈwiːkənd//
     
    -ing form weakening
    BrE BrE//ˈwiːkənɪŋ//
     
    ; NAmE NAmE//ˈwiːkənɪŋ//
     
     
    jump to other results
  1. 1[transitive, intransitive] weaken (somebody/something) to make somebody/something less strong or powerful; to become less strong or powerful The team has been weakened by injury. The new evidence weakens the case against her. This new story has severely weakened the President’s position. His authority is steadily weakening. opposite strengthen
  2. 2[transitive, intransitive] weaken (something) to make something less physically strong; to become less physically strong The explosion had weakened the building's foundations. His health was weakened by overwork. She felt her legs weaken.
  3. 3[intransitive, transitive] to become or make somebody become less determined or certain about something You must not agree to do it. Don't weaken. weaken something Nothing could weaken his resolve to continue.
  4. Extra examples The British pound continued to weaken against the dollar. The division of Germany had served to weaken the party. The judgement serves to weaken public confidence in the courts. The military was badly weakened by the sanctions. The regime was fatally weakened by the unrest and violence. The storm eventually weakened. a move designed to weaken the rebels exchange rates that dramatically weakened the dollar He began to weaken as his opponent continued the onslaught. She felt her legs weaken further as she climbed higher up the slope. She felt herself beginning to weaken in the face of his persuasion. The explosion had weakened the building’s foundations considerably. This new scandal has severely weakened the President’s position.
See the Oxford Advanced American Dictionary entry: weaken