upsurge
US /ˈʌp.sɝːdʒ/
UK /ˈʌp.sɝːdʒ/

1.
급증, 증가, 상승
an upward surge in the strength or quantity of something; an increase
:
•
There has been an upsurge in violent crime.
폭력 범죄가 급증했다.
•
The company experienced an upsurge in sales after the new marketing campaign.
새로운 마케팅 캠페인 이후 회사는 매출이 급증했다.