Dangerousness in a dream signals the need to be brave. You may not have solved the problem or unexpected difficulties arise that completely overwhelm you and demotivate you to continue actions.
feel dangerousness - feel fear, insecurity or have doubts about matters that you will have to confront
feel terrified about by someone else's action - you will lose control over your own life
to see dangerousness in others - someone will rely on you, alternatively a dream foretells a relationship that will become very complicated over time.
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