upsurge

(up sʉrj; for n. upsʉrj′)

intransitive verb upsurged, upsurging

to surge up

noun

a surge upward

See upsurge in American Heritage Dictionary 4

intransitive verb up·surged, up·surg·ing, up·surg·es
To surge up.
noun (ŭpˈsûrjˌ)
A rapid or abrupt rise: an upsurge in violent crime.

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