The word you're looking for is "skeptical." It describes a state of doubt or questioning regarding the truth or validity of a claim or belief. A skeptical person often seeks evidence or reasoning before accepting something as true.
Fiction
discerning
The word that means true or actual is "genuine." It signifies authenticity and reality, distinguishing something that is real from what is false or counterfeit. Another synonym is "veritable," which also conveys the idea of being true or real.
'Testing' is used to find whether a statement is true or false.
True means that it is correct. False means it is not true.
The word you're looking for is "suspicious." It describes a feeling of doubt or mistrust regarding the truth or integrity of something or someone.
He is not gay. Stop doubting it already
something is not true
To partition something means to divide it into several parts that are held separate from each other. This is true whether the partition is of land, as in Palestine/Israel, or of a hard drive, such at the main drive of a computer.
plausible
pretense means a behavior in a genuine but they deceive someone or something
of course that is true .That is what vaporization means
If not p, then not q means that if something is not true or does not happen (p), then something else is also not true or does not happen (q).
Confidence.
It means that something is true, there can be no arguments (disputes) about it.
Presumed means to suppose something to be true.
Whether it is a true religion is something every one has to arrive at on their own based on all the facts.