I'm writing a short bit on time travel just to get my thoughts on paper and try to organize them, and need to make sure I'm using the word paradox right. Here's the quote I'm concerned about right now-
If you change the past, you will most likely remove the event that required you to change the past. If this happens and you do not change the past because the event that triggered you changing the past is no longer there, it becomes a paradox and who knows what happens now.
Google said it was a contradictory phrase to itself, which I think lets it work in this situation. If there's a better word I'm missing, let me know. This is not for school or anything, just some notes I'm writing for myself.