On a knife-edge British phrase
A situation makes people anxious or worried, and nobody knows they will succeed or fail, or nobody knows what is going to happen next.
My family is on a knife-edge, waiting for the result of the Covid 19 tests because we have been in close contact with an infected person.
I'm on a knife-edge about my university entrance exam result.
The two negotiators had failed to sign a peace treaty between two countries, which made the frontier zones poised on a knife-edge.
To be very anxious
To feel that unpleasant or dangerous things likely happen to you
To cause someone to feel confused, worried, or upset
To cause someone to feel confused, worried, or upset
To feel worried, excited, or nervous about something.
The origin of this phrase is not clear.
Eyes with dark rings around them
I get eyes like two burnt holes in a blanket after sleepless 2 nights