I've been experiencing this for a few weeks now and wondered if anyone else has experienced it? Quite often when I talk, I will replace a word within the sentence with a different word, sometimes the word is related to what I'm saying, sometimes it doesn't make sense at all. Eg one time I said "We're going to the theatre", when I meant to say cinema. And sometimes the completely wrong word will come out. Or it'll come out mixed up eg washdisher instead of dishwasher. It's a new thing for me, never happened previously. Not sure whether it's something I need to worry about or not. Maybe related to my medication? I'm currently taking Etoricoxib (Arcoxia) 60mg a day with a PPI.