Simple & Direct:
* The heavy book fell from the shelf with a resounding thud.
* The basketball hit the backboard with a dull thud.
Adding Detail:
* The old door slammed shut, the thud echoing through the empty hallway.
* The suitcase landed on the ground with a soft thud, sending a cloud of dust into the air.
Figurative Language:
* His heart sank with a thud when he saw the failing grade on his test.
* The news of her resignation hit the company with the force of a thud, sending shockwaves through the ranks.
Sentence with Context:
* The hiker stumbled and fell, his backpack hitting the ground with a loud thud that sent shivers down his spine.
The best sentence for "thud" depends on the context and the desired effect. Choose the one that best fits your writing!