1. rising or swelling upward suddenly and powerfully

1. a sudden upward surge or rise

Examples

• The upsurging waves crashed against the rocky shore.
• There was an upsurging of public support for the new policy.
• The upsurging emotions made it difficult for her to speak.
• An upsurging of nationalism swept through the country.
• The upsurging crowd cheered loudly for their team.
• He felt an upsurging of hope when he heard the good news.