I'd like to say "I said another word instead of a necessary one. ('I mixed up? I messed up?') Hello, Please let me know, how should I say when I said another word instead of a necessary one: "I am sorry, I mixed up the words." "I am sorry, I messed up the words." Or may be something different? In other words the question is: What is the verb which means " To - - - - - the meaning of the words". Or " To - - - - - one object and another". "To think that the first is the second and the second is the first". Google translator says 3 different options: To mix up (the words) To mess up (the words) To confuse (the words) Thank you very much.