Simple past tense and past participle of charter.(verb)
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Use "chartered" in a sentence
"People come in chartered buses, private automobiles, on horse-back and bikes, but the healthiest, and the most faithful come walking."
"It was chartered from the Thai-Cambodia air line by a party of about thirty ground engineers from Don Muang."
"Hummel interests chartered from the Southern Pacific Railroad for the sum of three thousand dollars the sea-going tug _Hughes_, to which Dodge was now transferred for the purpose of being conveyed to the port of"