Contamination of infosystems was a perpetual threat, one of the few forms of military action that could be carried out over light-years.

Jockeys are spectacular athletes and compete bravely under the perpetual threat of dreadful injury.

I don't like hiding-or the perpetual threat to my life.

The greensward was an allergist's nightmare, cow pies were a perpetual threat.

He saw the sad expression on her face and the tears that remained in a state of perpetual threat.

Solar and wind companies also argue that the perpetual threat that their incentives will expire makes long-term planning difficult.

Dictatorships are perpetual threats to the United States because they can exist only through terror and war.

Then, to put the lid on it, our base is under a perpetual threat from those newspaper follows.

Also: Can we succeed in appeasing China, which is a perpetual threat to India?

Always a surliness about the people, and a perpetual threat of violence I feel.