From Longman Dictionary of Contemporary Englishpitch-darkˌpitch-ˈdark adjective DARKcompletely dark Outside it was pitch-dark and pouring with rain.► see thesaurus at dark
Examples from the Corpus
pitch-dark• Outside it was pitch-dark and spitting with rain.• It was pitch-dark and the house was very quiet when the first effects of the treatment woke him.• It was pitch-dark by now, and cold.• One is a realistic, pitch-dark forest of oaks - an ideal place for hide-and-seek in almost treeless Venice.• I'm not going in. It's pitch-dark in there!• He moved slowly and cautiously across the pitch-dark room until his knees touched the edge of the bed. 