tough nut to crack
Appearance
English
[edit]Alternative forms
[edit]Pronunciation
[edit]Audio (General Australian): (file)
Noun
[edit]tough nut to crack (plural tough nuts to crack)
- Synonym of hard nut to crack
Usage notes
[edit]- Tough/er/est nut to crack is by far the most common form in COCA (US), about equal to hard/er/est nut to crack at BNC (UK).
Translations
[edit]challenging problem to solve
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