1. to rise up from below, especially of water or emotions
Usage: often used of water rising from underground sources or deep ocean currents
2. to come forth or emerge suddenly and forcefully
Usage: often used figuratively of emotions or feelings

Examples

• Cold water began to upwell from the underground spring.
• Nutrient-rich water upwells from the ocean depths near the coast.
• Tears upwelled in her eyes as she read the letter.
• Anger upwelled within him at the unfair treatment.
• The artesian well caused water to upwell naturally from the ground.
• Memories of childhood upwelled as she walked through her old neighborhood.