pitchy

adj

1. Of, pertaining to, or resembling pitch.
2. Very dark black; pitch-black.

   “Mancunium, Manceaster, what we now call Manchester, spins no cotton […] The Creek of the Mersey gurgles, twice in the four-and-twenty hours, with eddying brine, clangorous with sea-fowl; and is a Lither-Pool, a lazy or sullen Pool, no monstrous pitchy City, and Seahaven of the world!”

   “In front of me the road became pitchy black as though it was tarred, and I saw a contorted shape lying across the pathway.”

   “But each time the night over the hills remained pitchy black. Then the rain came on more heavily again.”

   “To make it worse, something went wrong wit the Glow-worm's lighting system, and the room was in pitchy darkness.”

3. Off pitch; out of tune.

   “[…] “Auto Tune”—digital voice processing initially designed to correct a “pitchy” (out-of-tune) singer's voice.”