Related Clues:

• Settle down heavily
• Beanbag-chair sound
• Sound of Alka-Seltzer hitting water
• Sound with a splash
• Fall into a beanbag chair
• Settle heavily
• Fizz preceder?
• Stone-in-the-water sound
• Diving sound
• Plunk down
• Alka-Seltzer sound
• Sound from a tap
• Alka-Seltzer-in-water sound
• Fall with force
• Sit tiredly