1. past tense of kerplunk; to fall or drop heavily into water or onto a surface with a loud sound
Usage: informal; onomatopoetic
2. past tense of kerplunk; to place or set down abruptly or heavily
Usage: informal

Examples

• The stone kerplunked into the pond, sending ripples across the water.
• She kerplunked her suitcase down on the floor with a heavy thud.
• The ball kerplunked off the roof and landed in the bushes.
• He kerplunked himself onto the couch after a long day at work.
• The anchor kerplunked into the sea with a splash.
• She kerplunked the groceries on the kitchen counter.