One of the mysteries of the English language finally explained.
Definition of pseudo-Christian in English:
pseudo-Christian
noun
A person falsely called a Christian; a person who falsely claims to be a Christian, a pretended Christian.
adjective
Of, relating to, or characterized by pseudo-Christians or pseudo-Christianity; falsely called or professing to be Christian.
Origin
Late 16th century; earliest use found in William Fulke (d. 1589), theologian and college head. From pseudo- + Christian, after post-classical Latin pseudochristianus false Christian Compare Byzantine Greek ψευδοχριστιανός.