[fauigerzigerk]

Perhaps it comes down to how we define truth. Truth, for me, is not some sort of ontological object as the word "exists" may imply, and it requires nothing absolute.

Truth is an artifact of communication as experienced by those who are communicating. It's the semantic non-randomness in language. We share expectations regarding the consistency between statements and the degree to which language predicts empirical observations.

If none of those expectations are met, i.e when all truth is gone, then language loses its function.

[webdva]

Indeed, since truth does not exist, language and communication is impossible. But the truth predicate for propositions isn't necessary, as truth doesn't exist to legitimately create a legitimate need for any sort of necessity. So, instead of searching for the truth predicate, and as grammar and syntax, those subjective and arbitrary creators of languages and communications, are the ultimate sources of meaning rather than any inherent meaning itself, why not look for something else? Or establish something else? Like untruth and uncertainty?