A Question From Atheists

[FatAndFaithless]

Add this proposition number 0 in the beginning to fix this:

0. The definitions for X that we pick up from the dictionary are assumed to be true. They are our premises. All the definitions that there are for X in authentic dictionaries and encyclopedias are assumed to be valid and do not need any sort of justification. They are the basis of our knowledge and true. 

You're now assuming what you seek to establish.  Textbook circular argumentation.

I mean the guy said his view is a tautology, with pride.  Like it somehow makes it more convincing.