“A tough nut to crack” describes something difficult to solve or someone difficult to understand. Cambridge records both “hard” and “tough” in the idiom. This guide publishes the current meaning without asserting an exact historical first use.
ReviewedEvidence1 sourceSectionPhrases & Idioms
Quick answer
“A tough nut to crack” means a difficult problem to solve or a person who is difficult to understand.
Key details
Canonical Forma hard/tough nut to crack
Core Meaninga difficult problem to solve or a person who is difficult to understand
Further guidance
History Boundary
This guide does not claim a single inventor, exact origin date, or first printed use.
Meaning
“A tough nut to crack” means a difficult problem to solve or a person who is difficult to understand.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
Having your “back against the wall” means being in serious difficulty with very limited room to act. The guide stays with documented present-day meaning and does not invent an exact origin or first-use story.
Use “uphill battle” for a challenge that is difficult and requires a lot of effort, especially when progress is hard-won. The figurative phrase emphasizes difficulty and effort; it is stronger than simply saying a task takes time.
“A blessing in disguise” describes something that initially seems bad or unlucky but later produces a good result. Specialist history places the printed phrase in the mid-eighteenth century, while earlier texts may express similar ideas without proving the same idiom.
“A Needle in a Haystack” means something that is extremely difficult or effectively impossible to find because the search area is so large. This guide focuses on the documented modern idiomatic meaning and does not claim an unsupported exact origin date.
“A piece of cake” is an informal way to describe something very easy to do. A well-known early printed citation appears in Ogden Nash’s 1930s collection The Primrose Path, but an early citation is not proof that Nash coined the expression.
The informal idiom “not have a snowball’s chance in hell” describes a situation with essentially no chance of success. This guide limits the page to the current form, register, and meaning supported by Cambridge and does not add an unsupported origin story.
“Add fuel to the fire” means to make an already difficult, angry, or contentious situation worse. The metaphor is transparent, but the historical record reviewed here supports only broad seventeenth-century chronology rather than an exact first use.
“Add insult to injury” means making an already bad situation worse by adding another upsetting or disadvantageous act. This guide records the modern dictionary meaning only and leaves exact origin chronology unclaimed.
