- TenebraeA Christian religious service celebrated by the Western Church on the evening before or early morning of Maundy Thursday, Good Friday, and Holy Saturday, involving the gradual extinguishing of candles while a series of readings and psalms are chanted or recited.
- tenebrificProducing darkness, obscuring; (loosely) gloomy.
- tenebrificousSynonym of tenebrific (“producing darkness”).
- tenebrosityThe state or quality of being tenebrose or tenebrous.