When you continuously talk about a particular topic or issue repeatedly, it can be said that you are harping up on it. However, if you want to convey the same meaning using a different phrase or word, there are several options to choose from. For instance, instead of saying "stop harping up on that point," you could say, "please don't go on about it continually." Alternatively, you could say "you keep repeating the same thing over and over again; it's becoming rather tedious." Another option could be to say "you are continuously bringing up that topic, and it's becoming a little too much to bear." Whatever phrase or word you choose, the message remains the same, and it is essential to avoid becoming repetitive when communicating to avoid losing your audience's interest.