the sense that something bad is going to happen
ominous - threatening
The word ‘ominous’ implies something alarming or threatening that may foreshadow evil or disaster. It is always used in a negative context as it relates to something to be feared or worried about. In a social context, it is most commonly used in relation to an atmosphere or the weather.
Our CEO issued an ominous warning to staff that if losses continue, drastic action would need to be taken.
The director used sound and lighting effects to build a sense of ominousness as the movie progressed.
There are ominous dark clouds overhead. I think it’s going to rain heavily any minute now.