Definition, Meaning & Synonyms
a hard nut to crack / a tough nut to crack
idiom
/ə hɑrd nʌt tu kræk/ /ə tʌf nʌt tu kræk/

Definition
A challenging problem or situation that is difficult to understand or resolve.

Examples
- Finding a solution to that issue is a hard nut to crack.
- He is a tough nut to crack; it takes time to get him to open up.

Meaning
This phrase is often used to describe a person or a situation that is not easily dealt with, requiring significant effort or skill to overcome.

Synonyms
- challenging problem
- difficult case
- complex issue
- stubborn problem