and no mistake

and no mistake

1. (chiefly UK, dated) Without any doubt whatsoever; for sure.

   Synonym: (UK, slang, archaic) and no flies

   • 1950, C. S. Lewis, The Lion, the Witch and the Wardrobe:

     "We've fallen on our feet and no mistake," said Peter. "This is going to be perfectly splendid. That old chap will let us do anything we like."

• “and no mistake”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “and no mistake”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “and no mistake”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.