If something is incontrovertible, it is so clearly true that nobody can honestly prove it false. The door on the argument is shut: more talk will not turn the fact around.

If something is如果某件事是 incontrovertibleincontrovertible（無可反駁的）, it is它 so clearly true清楚到 that nobody can honestly prove it false沒有人能誠實地證明它是錯的。The door on the argument這場爭論的門 is shut已經關上了: more talk再怎麼講 will not turn the fact around也無法把這個事實翻過來。

You meet this word in law, science, history, and careful essays, not in chat with friends. People put it with evidence and proof — an incontrovertible video, an incontrovertible fact — and it feels formal and heavy.

You meet this word你會看到這個字 in law, science, history, and careful essays在法律、科學、歷史和用心寫的文章裡, not不是 in chat with friends在跟朋友聊天時。People人們 put it with常把它跟 evidence and proofevidence（證據）和proof（證明） 放在一起 — an incontrovertible videoan incontrovertible video（無可反駁的影片）, an incontrovertible factan incontrovertible fact（無可反駁的事實） — and而 it feels formal and heavy聽起來正式又沉重。

Though actually, speakers sometimes reach for it when they only mean “I am very sure,” and that is looser than the word promises. A favourite colour is not incontrovertible; a measurement everyone can check might be. Using it about small everyday things can sound as if you are trying to win a fight.

Though actually不過, speakers sometimes reach for it有時候說話的人會用這個字 when they only mean只是想表達 “I am very sure,”「我很確定」, and而 that is looser than the word promises這比這個字原本承諾的意思還要鬆散。A favourite colour喜歡的顏色 is not不是 incontrovertibleincontrovertible; a measurement everyone can check大家都能查證的測量結果 might be可能才是。Using it about small everyday things把它用在日常的小事情上, can sound as if聽起來會像是 you are trying to win a fight在硬要贏一場爭吵。