I guess it depends on one's definition of "predictable" in any given conversation.
In any given conversation with me you don't need to guess my definitions of words. I don't redefine words for my personal needs. I stick to 21st century English as it is generally accepted. That said, I am not a native speaker so I muddy the waters sometimes. When I do, it's because I haven't mastered the language properly not because I feel like vasring deemerorus adere offdac zxxcxcxcvggg.