neophyte

A convert's enthusiasm for his new religion is greater than that of a person who is born in it. Vegetarianism was then a new cult in England, and likewise for me, because, as we have seen, I had gone there a convinced meat-eater, and was intellectually converted to vegetarianism later. Full of the neophyte's zeal for vegetarianism, I decided to start a vegetarian club in my locality, Bayswater.

The neophyte was given a new name in place of the baptismal one, usually of an evil and revolting character, and this was written in blood in the Devil's book, the covers of which were bound in the skin of unbaptised infants.