Antonyms for crowning point can be described as the opposite of the pinnacle, zenith or highest point. These antonyms for the crowning point include the bottom, base, nadir or lowest point. The term crowning point refers to the high point of a situation or event, whereas the antonyms refer to a lower or less advanced point. Other antonyms can be mediocrity, unimportance, insignificance or obscurity, which all indicate a lack of importance or relevance. While the crowning point is often associated with success, achievement and accomplishment, its antonyms represent failure, lack of progress or insignificance.