Aha. So according to some of the definitions/synonyms cited, all I need to do, all anyone needs to do to render something irrefutable is to dispute it. Or question it. Or raise an if or but.
Good luck achieving that. You'll find an objection to anything.
Just because someone has an objection doesn't mean it's valid, simply asserting something is refuted is one thing, but demonstrating HOW and WHY, successfully refutes it. You disputing it does nothing to change it's refutability, unless of course you can prove your dispute valid.
And no, the synonyms do not suggest what you're suggesting.
The definitions all corroborate each other, so saying "some" of the definitions is dishonest, the only real change is the wording.