IPA: /ˌkɒntrəˈdɪktəri/
KK: /kɒntrəˈdɪktəri/
Describing something that is in conflict or disagreement with itself or another statement.
His actions were contradictory to his words, making it hard to trust him.
A statement or idea that is in conflict with another, making it impossible for both to be true at the same time.
The two statements were contradictory, as one claimed it was raining while the other said it was sunny.
Contradictory → It is formed from "contra-" (meaning against) and "dicere" (meaning to say). The word describes statements or ideas that say the opposite of each other, hence being against one another.
Think of saying something 'against' ('contra-') what has been stated ('dicere') — that's why contradictory means opposing statements.