Definition of a hard/tough nut (to crack)
- The team's defense is a tough nut to crack.
- The problem is a hard nut to crack.
- He's a tough nut, but I think I can get him to agree to the contract.
: not easily penetrated : not easily yielding to pressure
: not capable of being spread : very firm
: having a harsh or acid taste
: with great or utmost effort or energy : strenuously
: in a violent manner : fiercely
: to the full extent
: to make a very sharp explosive sound
: to break, split, or snap apart
: fail: such as
: a loud roll or peal
: a sudden sharp noise
: a sharp witty remark : quip
: of superior excellence or ability
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