n.

1. 矛盾[C][U]
   There seems to be a contradiction between her words and actions.

   她的言行似乎不一致。

2. 否认；反驳；抵触[U][C]
   The boss will not tolerate any contradiction.

   老板不能容忍顶嘴。

3. 自相矛盾的说法[C]
   The statement "A circle is a square" is a contradiction.

   “圆是正方形”这句话是自相矛盾的说法。

n.

1. a combination of statements, ideas, or features which are opposed to one another.
2. the statement of a position opposite to one already made.