A more thorough explanation:

verus

Verus means something that is true, genuine, and actual.

• The verus reason for his absence was that he was sick.
• She showed me the verus painting that was created by the famous artist.

The examples illustrate that verus is used to describe something that is real and not fake. In the first example, the reason for the person's absence was true and not made up. In the second example, the painting was genuine and not a copy or imitation.