Dire and Tenebrous

Dire adjective - Being or showing a sign of evil or calamity to come.

Tenebrous and dire are semantically related in gloomy topic. In some cases you can use "Tenebrous" instead an adjective "Dire", when it comes to topics like sombre, somber.

Tenebrous adjective - Causing or marked by an atmosphere lacking in cheer.

Dire and tenebrous are semantically related in gloomy topic. Sometimes you can use "Dire" instead an adjective "Tenebrous", if it concerns topics such as sombre, somber.