1. upward movements of water or other fluids; surges upward
2. sudden increases or rises in emotion, activity, or intensity

1. moves or flows upward; surges up
2. increases suddenly in intensity or amount

Examples

• Ocean upswells bring nutrients to the surface.
• The crowd felt upswells of excitement during the concert.
• Cold water upswells from the deep ocean currents.
• Her anger upswells whenever she thinks about the incident.
• The music upswells to a dramatic crescendo.
• Economic activity upswells during the holiday season.
• Thermal upswells help birds soar without flapping their wings.