Simple past tense and past participle of deworm.(verb)
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Use "dewormed" in a sentence
"Leading economists Esther Duflo, Kristin Forbes, Michael Kremer, and Vikram Akula, through Deworm the World, have dewormed more than 3 million children."
"The boys went in at 5 on Wednesday and got dewormed."
"The entire gang is FELF/FIP free, dewormed, and ready to take over a household like YOURS."