Kill or cure British phrase
Said of something that will lead to either an absolute success or a complete failure
If you don't take action now, we'll be trapped here forever. It's kill or cure!
The doctor has to be extremely cautious as his decision will kill or cure the patient.
Someone or something that tends to be unpredictable
To make an issue or situation less clear and less easy to understand
Used to describe something which is uncertain.
The origin of the expression is very vague. It's dated from the mid-1700s and was used in a half-joking way.