10 Black Idioms in English: Meanings & Examples
Have you ever heard someone say that a person is the black sheep of the family, or that a business is finally in the black? These expressions may seem confusing if you take the word black literally, but they have specific meanings in everyday English.
In this article, you'll learn 10 useful black idioms and phrases in English, with clear meanings, natural example sentences and helpful context. These expressions cover a range of topics, including personality, relationships, money, business, documents, technology, darkness and physical appearance.
Learning English idioms about black can help you understand conversations, films, books, news articles and informal writing more easily. It can also give you more natural ways to express ideas in English instead of relying only on literal vocabulary.
Some of these expressions are traditional idioms, while others are common words or technical expressions containing black. Together, they show how colour can add meaning, emotion and imagery to the English language.
Why Learn Black Idioms and Phrases in English?
Colour idioms are an important part of everyday English. They often have meanings that are different from the literal meaning of the colour itself. For example, in the black has nothing to do with the colour of an object; it refers to being financially successful or profitable.
For English learners, these expressions are especially useful because native speakers often use them without explaining their meaning. Knowing common black idioms can therefore improve both your vocabulary and your reading and listening comprehension.
The expressions in this guide include some very common idioms, as well as a few modern or descriptive terms. Understanding the context is important because not every expression should be used in every situation.
10 Black Idioms and Phrases in English
Let's explore each of these black idioms and expressions in detail. They are grouped into themes to make them easier to understand and remember.
Black Idioms About People, Behaviour and Relationships
1. Black Sheep
Meaning: If someone is described as the black sheep of a family or group, they are considered different from the other members, often because their behaviour, interests or choices are unusual or not approved of.
The expression creates the image of a black sheep standing out from a flock of sheep of a different colour. It is most commonly used for a person who does not fit the expectations of their family or group.
Examples:
Avni's elder sister was considered the black sheep of the family.
He's always felt like the black sheep among his highly academic siblings.
In simple terms: Black sheep means a person who is noticeably different from the other members of a group, especially a family.
2. The Pot Calling the Kettle Black
Meaning: This expression describes a situation in which someone criticises another person for a fault that they themselves also have. It is often used to point out hypocrisy.
The image behind the idiom is humorous: a blackened pot criticises a kettle for being black even though the pot is black too. The expression is particularly useful when two people share the same fault, but one of them criticises the other for it.
The saying is genuinely old — its earliest recorded English use traces back to a 1620 translation of Cervantes' Don Quixote.
Examples:
My sister called me a liar – that's the pot calling the kettle black!
He criticised me for being late, which is a bit of the pot calling the kettle black, since he's never on time either.
In simple terms: The pot calling the kettle black means criticising someone for a fault that you also have.
3. Be in Someone's Black Books
Meaning: If you are in someone's black books, that person is annoyed with you, angry with you or has a negative opinion of you because of something you have done.
This expression is often used when someone's actions have caused them to lose another person's favour. It is especially useful in informal conversations about relationships, work or family.
Examples:
He hasn't visited his relatives in India for a long time, so he knows he is in his uncle's black books.
Forgetting her birthday landed him firmly in his sister's black books.
In simple terms: Be in someone's black books means to be disliked or regarded with disapproval by someone.
Keep reading: Love Idioms and Expressions in English
4. Give Someone a Black Look
Meaning: To look at someone angrily or disapprovingly.
A black look communicates anger or strong disapproval without words. The expression is usually used to describe a noticeable facial expression or stare.
Examples:
My boss gave me a black look when I suggested a different plan.
She gave him a black look across the room when he mentioned the missed deadline.
In simple terms: Give someone a black look means to look at someone in an angry or unfriendly way.
Black Idioms About Money, Documents and Technology
Some expressions with black are common in business, finance and modern technology. These are useful expressions to recognise in professional English and everyday reading.
5. Be in the Black
Meaning: To be financially successful, profitable or earning more money than you are spending.
This expression is commonly used when discussing companies, organisations or personal finances. The opposite expression is be in the red, which refers to financial loss or difficulty.
Examples:
We hope our company will be in the black by the end of the year.
After several years of losses, the business is finally back in the black.
In simple terms: Be in the black means to be making a profit or to have more money coming in than going out.
6. In Black and White
Meaning: If something is in black and white, it is written down clearly or stated in a definite way.
The expression is often used when someone wants written evidence, instructions, terms or an agreement instead of relying on a spoken promise. It can also describe something presented as completely clear or definite.
Examples:
I knew we'd got the contract because the agreement was there in black and white.
She wanted the agreement in black and white before she committed to anything.
In simple terms: In black and white means written down clearly or expressed in a clear and definite way.
7. Black Hat Hacker
Meaning: A black hat hacker is a person who uses hacking skills for illegal, harmful or malicious purposes.
The term can refer to someone who attempts to gain unauthorised access to computer systems, steal information, damage systems or misuse digital accounts. In cybersecurity, black hat is commonly contrasted with white hat, which refers to authorised and ethical security work.
Unlike most expressions in this article, black hat hacker is better described as a technical term rather than a traditional idiom. It is included because it is a common modern expression containing the word black.
Examples:
The company hired ethical hackers to protect its systems from black hat hackers.
A black hat hacker attempted to gain unauthorised access to the company's computer network.
In simple terms: Black hat hacker means a hacker who uses their skills for illegal or malicious purposes.
Keep reading: Ice Idioms and Expressions in English
Black Expressions About Darkness and Appearance
Not every expression containing black is an idiom. Some are descriptive expressions used to talk about darkness, colour or physical appearance. These are still useful vocabulary items for English learners.
8. Pitch-Black
Meaning: Extremely dark or completely dark.
You can use pitch-black to describe a room, tunnel, night, sky or any other place with very little or no light. It is stronger than simply saying dark.
Examples:
I drove through a pitch-black tunnel yesterday.
The power went out, and the whole house was pitch-black within seconds.
In simple terms: Pitch-black means completely or extremely dark.
9. Black and Blue
Meaning: If a part of your body is black and blue, it is badly bruised.
The expression refers to the dark colours that can appear on the skin after a bruise. It is commonly used when talking about an injury after an accident, fall or other physical impact.
Examples:
Her arm was still black and blue after the accident.
He fell off his bike and was black and blue for a week afterwards.
In simple terms: Black and blue means badly bruised or covered with bruises.
10. Jet-Black
Meaning: An extremely deep or dark black colour.
Jet-black is a descriptive expression rather than a traditional idiom. It is often used for hair, eyes, clothing, cars and other objects that have a very deep black appearance.
Examples:
She has long, jet-black hair and striking ochre-coloured eyes.
The car's jet-black paint gleamed under the showroom lights.
In simple terms: Jet-black means extremely deep or dark black in colour.
Quick Summary of Black Idioms and Their Meanings
Use this table as a quick revision guide for the 10 black idioms and phrases covered in this article.
| Black Idiom or Phrase | Meaning |
|---|---|
| Black sheep | A person who is different from the other members of a group or family |
| The pot calling the kettle black | Criticising someone for a fault you also have |
| Be in someone's black books | To be disliked or regarded with disapproval |
| Give someone a black look | To look at someone angrily or disapprovingly |
| Be in the black | To be profitable or financially successful |
| In black and white | Written down clearly or stated in a definite way |
| Black hat hacker | A hacker who acts illegally or maliciously |
| Pitch-black | Extremely or completely dark |
| Black and blue | Badly bruised |
| Jet-black | Extremely deep or dark black in colour |
How to Use Black Idioms Naturally
Knowing an idiom's meaning is only the first step. To use black idioms in English naturally, you also need to understand the context and tone of each expression.
For example, in the black is useful in conversations about money and business, while in black and white is common when discussing contracts, rules or written information. The pot calling the kettle black is more conversational and is usually used when pointing out hypocrisy.
It is also helpful to remember that not every expression containing black is technically an idiom. Black hat hacker, pitch-black and jet-black, for example, are better treated as common terms or descriptive expressions. Learning them alongside traditional idioms still helps you recognise natural English more easily.
A simple way to practise is to choose three expressions from this article and write one original sentence for each. Then try to use at least one of them in your next English conversation or piece of writing.
Frequently Asked Questions About Black Idioms
What are black idioms?
Black idioms are English idioms and expressions that contain the word black. They can describe people, relationships, emotions, money, behaviour, darkness, appearance and other everyday situations.
What does 'black sheep' mean?
Black sheep refers to a person who is noticeably different from the other members of a group or family, especially when their behaviour or choices are unusual or not approved of.
What does 'in the black' mean?
In the black means financially profitable or financially successful. For example, a company that earns more than it spends can be described as being in the black.
What does 'in someone's black books' mean?
If you are in someone's black books, they are annoyed with you or have a negative opinion of you because of something you have done.
What does 'pitch-black' mean?
Pitch-black means extremely or completely dark. For example, if you say, 'The room was pitch-black', you mean that there was almost no light in the room.
What does 'the pot calling the kettle black' mean?
The pot calling the kettle black means criticising someone for a fault that you also have yourself. It is commonly used to point out hypocrisy.
What does 'in black and white' mean?
In black and white means that something is written down clearly or expressed in a definite way. It is often used for agreements, rules, instructions or evidence.
Are all expressions with 'black' traditional idioms?
No. Some expressions in this list are traditional idioms, while others are common descriptive or technical terms. For example, black sheep and the pot calling the kettle black are idioms, whereas jet-black and black hat hacker are better described as a descriptive expression and a technical term.
Conclusion
From describing someone who stands out from their family to talking about financial success, anger, darkness, technology and written agreements, these 10 black idioms and phrases show how much meaning a colour can add to English.
Expressions such as black sheep, in the black, in someone's black books and the pot calling the kettle black are particularly useful because you may encounter them in everyday conversations, books, articles and other forms of English.
Try choosing two or three expressions from this list and creating your own sentences. The more you learn idioms in context, the easier it becomes to recognise and use them naturally and confidently.
Which of these black idioms was new to you? Try using one in a sentence in the comments below, and continue building your English vocabulary with more colour idioms in English.
