SBF,
Truth is not a theory. It's a label we apply to claims that meet a specific criteria.
And words don't have intrinsic meanings. They have usages. A word means whatever two or more people agree it means. And the way I'm using the word is how just about every single English speaking person on this planet uses the word.
But no matter, if you mean something OTHER than "claims that match reality" then please explain what you mean by "truth" and why it's relevant to our discussion.