upsurge noun 1verb 1forms 3 noun1 •A sudden strong rise or flow.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. — 1964 verb1 •to surge up, or to become stronger or greater formsupsurged · upsurging · upsurges
