upsurge

1. A sudden forceful flow (synset 107454840)
   is a type of: flow, flowing - the motion characteristic of fluids (liquids or gases)
   subtypes:

   • debris storm, debris surge - the sudden spread of dust and debris from a collapsing building
   • onrush - a forceful forward rush or flow
   same as: rush, spate, surge
2. A sudden or abrupt strong increase (synset 100365613)
   "stimulated a surge of speculation"; "an upsurge of emotion"; "an upsurge in violent crime"
   is a type of: increase, step-up - the act of increasing something
   same as: surge

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