"Anti-theist" can have a slightly different meaning. While "atheist" simply means a lack of belief in God, "anti-theist" can mean "actively opposed to theism," and by extension, religions that worship a deity. Not all atheists are anti-theists, but the militant atheists discussed above...
In 1869, English biologist T.H. Huxley coined this noun referring to someone whose religious beliefs lie somewhere in between those of a theist and an atheist — that is, a believer and a disbeliever. Huxley combined the Greek prefix a-, meaning "not," with gnostos, "known." This word...
I’ve been an atheist for years and years, but somehow I felt it was intellectually unrespectable to say one was an atheist, because it assumed knowledge that one didn't have. Somehow, it was better to say one was a humanist or an agnostic. I finally decided that I’m a creature of...