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Two statements, beliefs, or pieces of evidence are contradictory when they pull in opposite directions so that they cannot both be true, or cannot both be right at the same time. “The door was locked” and “she walked straight in” are contradictory if we mean the same door at the same moment.
when they pull in opposite directions當它們往相反方向拉扯，so that they cannot both be true, or cannot both be right at the same time導致不能同時為真、或不能同時都對，Two statements, beliefs, or pieces of evidence are contradictory兩個陳述、信念或證據就叫做矛盾。if we mean the same door at the same moment如果指的是同一扇門、同一個時刻，'The door was locked'『The door was locked』（門是鎖著的）and和'she walked straight in'『she walked straight in』（她直接走了進去）are contradictory就是互相矛盾的。
People also call a person contradictory when they keep saying one thing and doing another, though that use is a little looser — it means they do not line up, not always that a could prove a clash.
when they keep saying one thing and doing another當一個人老是說一套、做一套，People also call a person contradictory大家也會說這個人contradictory自相矛盾，though that use is a little looser不過這種用法比較鬆——it means they do not line up意思是言行對不上，not always that a logician could prove a clash不一定是邏輯學家能證明的那種衝突。
The word is common in school, news, and argument. It is stronger than “different”: two ideas can be different and both fine; contradictory ones fight.
The word is common in school, news, and argument這個字在學校、新聞和辯論裡很常見。It is stronger than 'different'它的語氣比『different』不同更強：two ideas can be different and both fine兩個想法可以不同但都沒問題；contradictory ones fight但矛盾的想法會互相打架。
There is a rarer noun, a contradictory, for a statement that another, but almost all will meet the adjective.
There is a rarer noun, a contradictory有一個比較少見的名詞a contradictory，for a statement that contradicts another指跟另一個陳述矛盾的那句話，but almost all learners will meet the adjective但幾乎所有學習者遇到的都是形容詞用法。
組成Borrowed from Late Latin contradictorius, from Latin contradico (to speak against). Equivalent to contradict + -ory (having the nature of).
同家族的字
- contradictto say the opposite; the verb this adjective comes from
- contradictionthe clash itself; same family
原始詞典資料6 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
contradictoryadj/ˌkɒntɹəˈdɪkt(ə)ɹi/
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That contradicts something, such as an argument.
- This wide variety of genuinely contradictory holy sutras generated a serious problem in later Chinese and Japanese Buddhism. In the early period the Chinese and Japanese did not know that there were so many schools of Buddhism which disagreed with one another. Chinese and Japanese Buddhists assumed that every single Buddhist sutra was the actual words of the Buddha himself. As a result, Chinese Buddhists had to come up with some kind of explanation for the contradictory claims and assertions apparently made by the same holy person. The Chinese T’ien-t’ai school decided that the texts were spoken by the Buddha but tailored to different audiences of vastly different capabilities and insight.
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That is itself a contradiction.
- Our attitudes toward sharks are contradictory. We fear them and yet we seek them out.
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That is diametrically opposed to something.
- Schemes […] contradictory to common sense.
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Mutually exclusive.
- [White House deputy chief of policy Stephen] Miller has offered contradictory versions of Trump administration statements and court rulings.
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Tending to contradict or oppose, contrarious.
contradictorynoun/ˌkɒntɹəˈdɪkt(ə)ɹi/
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human-scienceslogicmathematicsEither of a pair of propositions, that cannot both be true or both be false.
- If one proposition is the negation of another, it follows trivially from the definition that the two propositions are contradictories. The converse does not hold. Two propositions can be contradictories without either being the negation of the other. For example: 3) John is more than six feet tall and 4) John is either exactly six feet tall or else less than six feet tall are contradictories, but neither is the negation of the other. Negation is one way, but not the only way, of forming a contradictory.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。