see hard nut to crack.
Words nearby tough nut
How to use tough nut in a sentence
His flesh is sagging a bit, but he is still trim and looks lean, sinewy and tough.
“You ask me my motivation,” Marvin says, moving back into his tough guy persona again.
After a bunch of tough talk, this round of the hacker-on-hacker fight nevered materialized.
Although tough environmental controls were put in place in 2000, enforcement has been haphazard.
It was also an occasion for voluptuary displays of tough-mindedness.
But this paper was a very tough, fibrous substance, and would resist quite a heavy blow as well as keep out the cold.Our Little Korean Cousin|H. Lee M. Pike
This was a hard nut to crack, if his past were not to be ruthlessly severed from Angel's by a word.Rosemary in Search of a Father|C. N. Williamson
"Tough—but most of us have been there, one time or another," Goodell observed sympathetically; and with that the subject rested.Raw Gold|Bertrand W. Sinclair
It is prepared from the nut of the areca palm, one of the most beautiful trees in the world.Alila, Our Little Philippine Cousin|Mary Hazelton Wade
You know that I come of tough fiber—of that old Creole race of Pontelliers that dry up and finally blow away.The Awakening and Selected Short Stories|Kate Chopin