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