← BackshareGuesstenebrific/ˌtɛnəˈbrɪfɪk/adjectiveCausing darkness or gloom.His tenebrific mood cast a shadow over the entire party.The old mansion had a tenebrific atmosphere that made visitors uneasy.The tenebrific clouds blocked out the sun completely.SynonymsshadowydarkgloomyAntonymsbright