Ominous (adj)

1. Synonyms

1.1. baleful

1.2. dire

1.3. menacing

2. Antonyms

2.1. auspicious

2.2. benign

2.3. favorable

3. Examples

3.1. The dark, heavy clouds made it ominous that a major storm was coming.

3.2. The very loose nail made it ominous that the wooden chair would fall apart.

4. Definition

4.1. Giving the impression that something bad or unpleasant is going to happen; threatening

5. Other Form

5.1. Ominously (adv)

5.1.1. having the character of an evil omen; threatening; sinister

5.2. Ominousness (adj)

5.2.1. the quality of being ominous