Incredible can also mean unbelievable in the sense of not worthy of belief. It comes from the Latin roots "in" meaning "not" and "credere" meaning "to believe." Example: "His story is incredible. It is obvious that he is lying." From this fundamental meaning of "incredible," incredible has been extended to mean "so good that it is hard to believe."

Incredible- something amazing, magnificent and amusing to a person's point of view

Credible means believable Incredible means unbelievable but people use it in a good way synonym; Amazing He has an incredible way of thinking The fireworks were incredible!

hi mark I think it means is extremely good, large, or great