Learn · Idioms Obstacles & Challenges
A tough nut to crack
B1Meaning
A difficult problem or challenge.
Example sentences
This exam proved to be a tough nut to crack for many students.
Negotiating a deal with them is a tough nut to crack.
Learn · Idioms Obstacles & Challenges
A difficult problem or challenge.
This exam proved to be a tough nut to crack for many students.
Negotiating a deal with them is a tough nut to crack.