Simple past tense and past participle of thud.(verb)
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Use "thudded" in a sentence
"Rain thudded on the roof of the canon's cottage, but the thickly woven thatching kept the room dry, except for one or two small places in the corners where water first pooled and then trickled in slow fat drops to the beaten earth floor."
"We sat there on the floor, Diana and I, and read the little book together, while the rain thudded against the window panes."
"A gusty wind beat against the long grey windows, and between the gusts the heavy rain thudded on the roof above."