You say water cannot wet water, so water isn't wet. I would like to point out the fact that objects that are completely saturated with water do not change their saturation level when introduced to more water, simply because they cannot possibly hold any more water than they already do. The fact that water does not wet water does not mean water isn't wet; it simply means that it cannot add any more water to the pre-existing volume of it than already exists in that space, and thus it simply becomes a larger puddle of water.

I don't believe this is a valid argument against water being wet; you're saying water isn't wet because water isn't wet.

You state that water can't be "moistened, covered, or soaked with water or other liquid" because it's already a liquid.

1. Water is constantly covered with itself, given the puddle contains more than one atom of H2O.

2. Are you saying there is an intrinsic property of liquids that prevents them from being any of those things, simply because they are liquids?

3. The fact that you outright stated that water is a liquid devalues your argument, as the second definition provided states that wet can mean "in a liquid...state"