일촉즉발이 · 일촉즉발을
an explosive situation, touch-and-go, on a knife-edge
Example
두 나라는 일촉즉발의 위기에 놓여 있습니다.
The two countries are in a crisis that could explode at any moment.
Word parts
일 one+촉 touch+즉 at once+발 go off
Literally 'one touch and it goes off at once'.
Related words