Ominous/ˈɑːmɪnəs/ Definition 1 of 1Pro Tip 1/3Negative Feel ‘Ominous’ describes situations filled with a sense of threat or danger. The sky looked ominous with dark clouds gathering. Pro Tip 2/3Not Always Visible Something ominous suggests a feeling of evil or harm that is not necessarily visible. An ominous presence lingered in the abandoned house. Pro Tip 3/3Enhance with Adverbs Use adverbs to intensify the sense of dread, such as 'highly' or 'increasingly'. The silence became increasingly ominous as he entered the room.