Answer: lurking

AnswerCrossword Clue
LURKINGLying in ambush
LURKINGHiding.
LURKINGReady to ambush
LURKINGIn the shadows, perhaps
LURKINGHiding in the shadows
lurking(of an unpleasant quality) Be present in a latent or barely discernible state, although still presenting a threat
lurkingRead communications on an electronic network without making one's presence known
lurking(of a person or animal) Be or remain hidden so as to wait in ambush for someone or something
lurkingthe act of skulking