American English

Definition of fall on/upon phrasal verb from the Oxford Advanced American Dictionary

 

fall on/upon

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    fall on/upon somebody/something

    [no passive]
     
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  1. 1 to be the responsibility of someone The full cost of the wedding fell on us.
  2. 2 to attack or take hold of someone or something with a lot of energy and enthusiasm They fell on him with sticks. The children fell on the food and ate it greedily.