When we say "it's pitch dark," we mean that it is completely dark, with no light at all. However, there are several synonyms that you can use to describe this level of darkness. For example, you might say that it's "inky," "black as coal," or "jet-black." You could also use more creative phrases, such as "as dark as the inside of a cave," "midnight black," or "lightless." No matter which synonym you choose, the message will be clear: it's too dark to see anything at all. So the next time you can't see your hand in front of your face, try using one of these descriptive terms to convey just how dark it is.