There is no such thing as a pseudo Christian. You are either saved in Christ, or not. I assume that when people say "pseudo Christian" they mean those that go by the name of Christian, but have never believed in the Lord Jesus unto salvation from sin. There are many that take the name of Christian, but have no use for Christ. They are not truly Christian, in the original sense of the word, but will not understand if you tell them this, or will object to it. As a result, labels such as "pseudo Christian", "carnal Christian", etc have ensued. But really, these are examples of a contradiction in term.
To quote Pete Townsend, we won't get fooled again.
Pseudo means "Fake"
Adolf Hitler was born and baptized into the Roman Catholic Church, but his beliefs and actions later in life did not align with Christian teachings. He used Christian symbolism for political purposes but held anti-Christian views and promoted a form of pseudo-religious ideology centered on the supremacy of the Aryan race.
Pseudo is an adjective.
What is a pseudo pod, well its a false foot.
Pseudo-City was created in 2005.
Pseudo Echo was created in 1982.
Pseudo Interactive was created in 1995.
Pseudo Interactive ended in 2008.
Pseudo-Martyr was created in 1610.
Pseudo Slang was created in 2009.
Pseudo solids are amorphous solids (as glass).