hardest nut to crack

A form of hard nut to crack — A problem that is challenging to solve.

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Meanings

nounhardest nut to crack (plural hardest nuts to crack)

plural hardest nuts to crack

  1. superlativeSuperlative form of hard nut to crack
Cite this entry
APA

hardest nut to crack. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/hardest%20nut%20to%20crack

MLA

“hardest nut to crack.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hardest%20nut%20to%20crack. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “hardest nut to crack,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/hardest%20nut%20to%20crack.

Source: hardest nut to crack on Wiktionary, CC BY-SA 4.0.