Simple past tense and past participle of jounce.(verb)
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Use "jounced" in a sentence
"When the occupants "jounced," the spring of this board naturally helped the bobs to keep going for some distance after it would ordinarily have come to a stand-still."
"Miriam asked me to pull over and I swung the truck off the asphalt, jounced over a rut, and stopped beside a car so rusted it looked as if it might come apart in the wind."
"They jounced over a rise, and a loud crack sounded beneath them."