A2 noun Neutral #368 most common

expert

/ˈek.spɜːrt/

An expert is a person who has a very high level of knowledge or skill in a particular subject or activity. This person has usually studied the topic for a long time or has many years of practical experience.

Examples

3 of 5
1

My father is an expert at fixing old cars.

My dad is very good at repairing old vehicles.

2

The government consulted an expert on public health.

The government asked a specialist for advice about health.

3

You should ask Sarah for help; she's a total expert with computers.

Sarah knows everything about computers, so ask her.

Word Family

Noun
expert
Adverb
expertly
Adjective
expert
Related
expertise
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Memory Tip

Connect 'EXpert' with 'EXperience'. You need a lot of EXperience to become an EXpert.

Quick Quiz

If you have a complicated legal problem, you should talk to a legal ______.

Correct!

The correct answer is: expert

Examples

1

My father is an expert at fixing old cars.

everyday

My dad is very good at repairing old vehicles.

2

The government consulted an expert on public health.

formal

The government asked a specialist for advice about health.

3

You should ask Sarah for help; she's a total expert with computers.

informal

Sarah knows everything about computers, so ask her.

4

According to the expert, the painting was created in the 15th century.

academic

The specialist said the painting is from the 1400s.

5

We hired a marketing expert to help us sell our new product.

business

We employed a professional to improve our sales strategy.

Word Family

Noun
expert
Adverb
expertly
Adjective
expert
Related
expertise

Common Collocations

expert advice expert advice
technical expert technical expert
expert opinion expert opinion
leading expert leading expert
become an expert become an expert

Common Phrases

an expert in

someone with deep knowledge in a field

an expert on

someone who knows a lot about a specific topic

expert at

someone who is very good at doing a specific action

Often Confused With

expert vs professional

A professional is someone who gets paid for their work, while an expert is someone who has the highest level of skill (though people are often both).

📝

Usage Notes

Use 'expert in' for fields of study (biology, history) and 'expert at' for skills or activities (cooking, dancing). The word can be used as both a noun (a person) and an adjective (describing a skill).

⚠️

Common Mistakes

Learners often forget to use 'an' instead of 'a' before 'expert' because it starts with a vowel sound. Also, do not confuse the noun 'expert' with the noun 'expertise' (the knowledge itself).

💡

Memory Tip

Connect 'EXpert' with 'EXperience'. You need a lot of EXperience to become an EXpert.

📖

Word Origin

From the Latin word 'expertus', which is the past participle of 'experiri', meaning 'to try' or 'to test'.

Grammar Patterns

Countable noun Takes the indefinite article 'an' Plural form is 'experts'
🌍

Cultural Context

In many Western cultures, experts are frequently featured on news programs to provide authoritative commentary on current events.

Quick Quiz

If you have a complicated legal problem, you should talk to a legal ______.

Correct!

The correct answer is: expert

Related Words

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pesticide

B2

A chemical substance used to kill or control pests that are harmful to crops, livestock, or humans. It is an umbrella term that includes insecticides, herbicides, and fungicides used widely in agriculture and gardening.

fertilizer

B2

A chemical or natural substance added to soil or land to increase its fertility and provide essential nutrients for plant growth. It is primarily used in gardening and agriculture to help crops develop faster and produce higher yields.

irrigation

B2

To supply land or crops with water through man-made systems such as pipes, ditches, or sprinklers. It is an essential agricultural process used to assist in the growth of plants, especially in areas with low rainfall.

erosion

B2

Erosion is the process by which the surface of the earth is worn away by natural forces such as water, wind, or ice. In a figurative sense, it refers to the gradual destruction or reduction of something abstract, such as power, rights, or confidence.

desertification

B2

The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture. It represents a significant environmental challenge where land loses its biological productivity and ability to support human life.

afforestation

B2

Afforestation is the process of establishing a forest on land that has not recently been covered by trees. It involves planting seeds or saplings to create new wooded areas, often to improve the environment or for commercial timber.

endangered

B2

To put someone or something at risk or in a situation where they could be harmed, damaged, or destroyed. In environmental contexts, it specifically refers to species that are at high risk of becoming extinct in the near future.

flora

B2

Flora refers to the collective plant life found in a specific region, habitat, or geological period. It is commonly used in scientific or environmental contexts to describe the variety and distribution of native vegetation.

fauna

B2

Fauna refers to the animals of a particular region, habitat, or geological period. It is a collective noun used to describe the entire animal life existing in a specific environment.

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