"Black as night" is a phrase often used to describe something that is exceptionally dark or somber. However, there are many other ways to convey this meaning, using synonyms such as pitch-black, ebony, dark as coal, jet-black, and inky. Each of these words accurately describes something that is as dark as the night sky, making them great alternatives to the overused phrase "black as night." Additionally, some other words like somber and gloomy can also be used to describe dark and depressing situations or emotions. Choosing the right synonym can help add depth and variety to your writing and avoid repetitive phrasing.