an unpleasant emotion caused by the belief that someone or something is dangerous, likely to cause pain, or a threat.
"drivers are threatening to quit their jobs in fear after a cabby's murder"
be afraid of (someone or something) as likely to be dangerous, painful, or threatening.
"he said he didn't care about life so why should he fear death?"
He squinted, looking around in his dark room. He could feel like something was there... but was it? Was it the scutter of beetles at the window or the slightly unnerving teddy bear on his desk that gave him this fear that something, somewhere, was watching him? Was it the static of the TV, the half built LEGO robot in the corner? Or was it...