An irrefutable statement or argument is one you cannot prove wrong, so you have to accept it — or at least, that is the claim. People use it about facts, photos, numbers, and proof in a fight or in court. It is a strong, careful word, a little loud. Though actually, speakers often call something irrefutable when they feel very sure, not when nobody on earth could argue back. In careful talk it is stronger than “convincing” and stronger than “hard to deny.” If someone can still make a fair case the other way, the word is doing more work than the facts.

無可反駁的、無可否認的