tough nut

Idioms and Phrases

see hard nut to crack .

Example Sentences

Cardiff, on the other hand, have leapt up the table in recent weeks and will prove a tough nut to crack.

From BBC

Dave is a tough nut to crack, no matter what anyone thinks they know.

From Los Angeles Times

"Until they do that, the trade pillar will be a tough nut to crack."

From Reuters

Adam Cole, the chief currency strategist at RBC, says he is biased toward a stronger dollar but admits the prevailing foreign exchange view in markets remains a tough nut to crack.

From Reuters

There are many other types of oaks to love, and telling them apart can be a tough nut to crack.

From Los Angeles Times