This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. That which cannot be refused.

"Julian takes him at his word, -- keeps him in ward till time of battle comes; but, the day before he counts on putting him to that war ordeal, the barbarian enemy sends embassy with irrefusable offers of submission and peace."

irrefutable