1 conspire (with sb) (to do sth) to plan to do sth bad or illegal with a group of people 密谋，同谋，串谋（做坏事或非法的事）: A group of terrorists were conspiring to blow up the plane. 一群恐怖分子正密谋炸毁飞机。

2 conspire (against sb/sth) (used about events) to seem to work together to make sth bad happen （指事情）似乎凑在一起（造成坏结果）: When we both lost our jobs in the same week, we felt that everything was conspiring against us. 我们俩在同一个星期内失去工作，使人觉得什么事情都在同我们作对。