be undeliverable編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看be undeliverablebe undeliverable — 形容詞形容詞1. cannot be delivered, as mail or goods1.形容詞釋義無法送達cannot be delivered, as mail or goods例句If the address is wrong, the package will be undeliverable.