What does it mean if something is described as ominous?

When something is described as ominous, it conveys a sense of impending danger or a warning sign that something bad or unfortunate may occur. The term is often associated with feelings of foreboding and serves as a cue to anticipate negative outcomes. For example, dark clouds gathering before a storm can create an ominous atmosphere, suggesting that severe weather is on the way. This characteristic evokes feelings of anxiety and alertness, making it a powerful descriptor in literature and everyday language when conveying tension or dread.