Simple past tense and past participle of truant.(verb)
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Use "truanted" in a sentence
""Did Mr. and Mrs. Trevelyan know that you and Cill truanted at Grace's house?" she asked."
"A violent, promiscuous, out-of-control teen who hated her parents, truanted to have sex with boys and used threats to make other children do what she wanted."
"The girl was known to be wild, and she truanted too often — particularly at night — for a swollen belly to be anything but an unwanted pregnancy."