Ven Abaya give some reference to prove that Anatta does not mean Anathma. (not self)
First he uses Pati Magga 1 - Mahavagga nana katha. (I can’t find this in Sutta Central)
There it say Anatta means Asara (fruitless)
Then he uses AN6 Atta sutta. (I can’t find them in Sutta central)
Ther he says Anatta means Mitya Noble Eightfold Path and Atta means Samma Noble Eightfold Path.
We use a Sinhalese word “Artha” (useful) if we say no “Artha” means useless.
Ven Abhay said that the word for impermanence in Pali is (Aduvan) He used Bakha Brahama sutta to support his claim.