Refers to a series of events that exacerbate a difficult situation, like a vicious cycle. Each delay was another turn of the screw, making the project's failure more likely.
Pro Tip 2/3
Intensity of Harm
Each use implies an intensification of harm or difficulty, not just a general worsening. Losing their biggest client was a severe turn of the screw for the company.
Pro Tip 3/3
Emotional Weight
The phrase can carry emotional weight, suggesting psychological stress or despair. The news of the lawsuit was a heavy turn of the screw.