"Dark as pitch" is a common saying that refers to an extreme level of darkness that is comparable to the substance pitch. However, there are numerous synonyms that can be used to describe a similarly dark environment. Some of the synonyms for "dark as pitch" include "inky black," "jet black," "pitch black," "coal black," "midnight," "obsidian," "ebony," and "inky darkness." These terms are often used to describe the darkness of night, a cave, or a poorly lit room. Whether it is pitch-black or inky darkness, the words used to describe such situations convey a sense of foreboding and mystery.