相关单词同義詞unexpected, sudden, subsidiary, surprising, occasional, 近義詞 casual, unexpected, unintended反義詞deliberate臨近詞acclaim, accident, accidentally, accidentalist, accidentalism, accidentalness, accidental load, accidental host, accidental fall, accidental slip, accidental cost, accidental data相似詞accha, accident, accident and emergency, accident-prone, accidental death, accidentally, accidentally on purpose idiom, accidents will happen idiom, 返回 accidental