Related Clues:

• Sit down heavily
• Alka Seltzer sound
• Sound of a drop
• Splat kin
• ... a person sitting down
• Seltzer characteristic
• Alka-Seltzer-into-water sound
• With 'down,' drop suddenly
• Coin-in-a-fountain sound
• Hit the easy chair
• Fall into a recliner
• Sit ungracefully (with "down")
• Splat's cousin
• Drop like a drop
• Pitter-patter's kin