Noun
/ˈəpˌsərj/,

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upsurges, plural; 
                    
                    
                        
        
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An upward surge in the strength or quantity of something; an increase
                                - -
                                
an upsurge in violent crime
                                            
 
 
 
                     
 
 
Web Definitions:
 
 
 
 
- rush: a sudden forceful flow
- surge: a sudden or abrupt strong increase; "stimulated a surge of speculation"; "an upsurge of emotion"; "an upsurge in violent crime"
- a sudden strong rise or flow;  to surge up, or to become stronger or greater