Synonyms for the term "pitch black" include various adjectives that describe darkness to varying degrees. Some common examples of such adjectives include jet black, coal black, dark as night, deep black or simply black. Other terms that can be used to describe darkness include inky, starless, lightless, shadowy, obscure, and dusky. Further, you could use words such as impenetrable, murky, ominous, and gloomy to describe the darkness. The term pitch black, used to describe an absolute or total lack of light, can be used interchangeably with most of these synonyms. Regardless of the choice of term, the overall meaning remains the same: a complete absence of light.