upsurge

English

Etymology

From up- +‎ surge.

Noun

upsurge (plural upsurges)

1. A sudden strong rise or flow.
   • 1964 March, “News and Comment: More block trains in South Wales”, in Modern Railways, page 152:

     Our South Wales correspondent expects the current upsurge of coal traffic in South Wales to swell BR tonnage in the area by 20 per cent this year compared with 1963 carryings.

Verb

upsurge (third-person singular simple present upsurges, present participle upsurging, simple past and past participle upsurged)

1. (intransitive) to surge up, or to become stronger or greater