Tenebrous means dark and shadowy. Your big, spooky house with its long, tenebrous passageways and dark corners would be a perfect place to have a Halloween party.

The adjective tenebrous is a perfect way to describe something that's dark and creepy, like a weirdly shadowed room in a castle or a gloomy cave. You can also use tenebrous to talk about things that are figuratively dark, or obscure, like a tenebrous deal made between a city's mayor and the Mafia. The Latin root word, tenebrosus, simply means "darkness."

Definitions of tenebrous

adj dark and gloomy

“a tenebrous cave”
Stygian, tenebrific, tenebrious
devoid of or deficient in light or brightness; shadowed or black

Sign up, it's free!

Whether you're a student, an educator, or a life-long learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.