nutshell

nutshell — noun

1. a fixed phrase used to signal that you are about to give a very short version of

1.nounB2
Definition

a fixed phrase used to signal that you are about to give a very short version of a longer explanation, keeping only the most important details

Example

In a nutshell, the company failed because it borrowed too much money too quickly.

opening with the phrase to introduce a summary

Astrid put the lecture in a nutshell: supply and demand control the price of everything.

put + [something] + in a nutshell pattern

Common collocations
  • in a nutshell
  • put something in a nutshell
Synonyms
  • briefly

    adverb that works in more sentence positions than the fixed phrase 'in a nutshell'

  • concisely

    more formal; emphasises efficiency of expression

  • in short

    slightly more formal; common in both speech and writing

  • to sum up

    used at the end of a discussion rather than the beginning

Antonyms
  • in detail

    contrasts with 'in a nutshell' by emphasising thoroughness over brevity

Grammar Patterns

in a nutshell + [clause]

put + [something] + in a + nutshell

Usage Note

This sense exists only within the fixed phrase 'in a nutshell' or the pattern 'put [something] in a nutshell.' You cannot say 'a nutshell' as a standalone noun to mean 'a summary.'

Common Mistakes

Let me nutshell the situation for you.
Let me put the situation in a nutshell for you.
'nutshell' is a noun, not a verb; the idiom requires 'in a nutshell' or 'put in a nutshell.'
I gave them the nutshell version.
I gave them the short version.
'nutshell' is not an adjective and cannot modify a noun directly.

2. the hard outer covering that surrounds and protects the seed inside a nut such a

2.nounB1
Definition

the hard outer covering that surrounds and protects the seed inside a nut such as a walnut, almond, or peanut

Example

A walnut has a thick, wrinkled nutshell that is very hard to crack open.

collocation: thick / wrinkled nutshell

The squirrel carried the nutshell to its nest and hid it under dry leaves.

Common collocations
  • crack a nutshell
  • hard nutshell
  • empty nutshell
  • thick nutshell
Synonyms
  • shell

    the general term for any hard outer covering, from eggs to turtles to nuts

  • hull

    specifically the outer covering of a seed or fruit, often removed before eating

Grammar Patterns

the + [adjective] + nutshell + of + [nut]

Usage Note

The literal sense is far less common in everyday speech than the figurative idiom 'in a nutshell.' Writers often use this sense in gardening, cooking, or nature contexts.

Common Mistakes

The egg has a hard nutshell.
The egg has a hard eggshell.
'nutshell' refers only to the shell of a nut, not to any other type of shell.
Idioms

in a nutshell

idiom

a fixed expression used to give a very short and clear summary of something that would normally take much longer to explain

In a nutshell, the film is about a young lawyer who fights for justice in a corrupt city.

The doctor put the treatment plan in a nutshell: rest for two days and drink plenty of water.

(put something) in a nutshell

idiom

To describe something using only the most important details.

Maya put her plan in a nutshell for the team.

Can you put the problem in a nutshell for me?

Word family

Synonym discussion

Sense: noun/1

Briefly, concisely, in short, in summary, and in a nutshell all tell the listener that a shortened version of an explanation is coming. Briefly and concisely are adverbs that work freely in different sentence positions ('He spoke briefly at the meeting'), whereas in a nutshell is a fixed idiom that usually opens a statement or follows the verb 'put.' In short and in summary are more formal than in a nutshell, which is common in everyday conversation. Concisely focuses on the efficiency of the expression itself, while in a nutshell emphasises that the essential idea is kept even when the details are dropped. Example: 'In short, the plan failed' vs. 'In a nutshell, we ran out of money.'

briefly ↗conciselyin short ↗in summary

Common collocations

Nouns

Phrases

Prepositions

Etymology

Old EnglishMiddle EnglishEnglish

The word is a compound of 'nut' (a seed with a hard covering) and 'shell' (the hard outer layer). The figurative use of 'in a nutshell' first appears in Shakespeare's play Hamlet (around 1600), where the main character says he could be 'bounded in a nutshell and count myself a king of infinite space,' contrasting a tiny physical space with limitless mental freedom. By the nineteenth century, the phrase had taken on its modern meaning of expressing something very briefly while keeping its core message.