What is "antitheism"

Antitheism \An`ti*the"ism\, n. The doctrine of antitheists. -- An`ti*the*is"tic, a.

also anti-theism, 1788; see anti- + theism.

n. The categorical opposition to the belief in any and all deity.

Antitheism (sometimes anti-theism) is active opposition to theism. The term has had a range of applications. In secular contexts, it typically refers to direct opposition to organized religion or to the belief in any deity, while in a theistic context it sometimes refers to opposition to a specific god or gods.