Thudded is a verb that describes the sound of a heavy, dull impact that reverberates through the air. If you want to describe this sound in a different way, you can use some synonyms. One synonym for thudded is banged, which suggests a sudden loud impact. Another synonym is thumped, which implies a repetitive, rhythmic impact like a beat. Pounded is another synonym that denotes a forceful impact that creates a loud noise. Finally, clunked is a synonym that is often used to describe the sound of a dull impact that doesn't resonate or reverberate as much as thudded does. Whatever synonym you choose, it will convey an image of a heavy object impacting something with force.