Take a turn for the worse idiom verb phrase
To worsen over time.
We need to think up some ways to save Jane. Her condition is taking a turn for the worse with every second pass by.
Everything took a turn for the worse in a blink of an eye.
Used to talk about a situation which begins to worsen
To destroy one's plans or ideas, often by doing something better than them
To do something difficult.
To weaken or demoralize one.
The verb "take" should be conjugated according to its tense.