Antonyms of adj tenebrious

1 sense of tenebrious

Sense 1
tenebrous, tenebrific, tenebrious -- (dark and gloomy; "a tenebrous cave")

INDIRECT (VIA dark) -> light -- (characterized by or emitting light; "a room that is light when the shutters are open"; "the inside of the house was airy and light")

Similarity of adj tenebrious

1 sense of tenebrious

Sense 1
tenebrous, tenebrific, tenebrious -- (dark and gloomy; "a tenebrous cave")
       => dark (vs. light) -- (devoid of or deficient in light or brightness; shadowed or black; "sitting in a dark corner"; "a dark day"; "dark shadows"; "dark as the inside of a black cat")