smart

smart — adjective

1. used to describe a person who looks neat, well-groomed, and dressed in a fashion

1.形容詞B1
釋義

used to describe a person who looks neat, well-groomed, and dressed in a fashionable or formal way — like wearing a pressed suit and polished shoes for a business meeting.

例句

Omar put on a smart grey suit for the job interview.

collocation: smart suit / smart outfit

The hotel staff all wear smart navy uniforms.

同義詞
  • neat

    focuses on tidiness rather than style

  • stylish

    emphasises fashionability more than neatness

  • well-dressed

    more literal, less idiomatic

反義詞
  • scruffy

    untidy or shabby in appearance

用法筆記

Common in British English for well-dressed appearance; American English often prefers 'sharp' or 'dressed up'.

常見錯誤

He was very smart dressed.
He was very smartly dressed.
💡'smart' is an adjective; the adverb 'smartly' is needed before a past participle.

2. describes a place, restaurant, club, or event that attracts wealthy, fashion-con

2.形容詞B2
釋義

describes a place, restaurant, club, or event that attracts wealthy, fashion-conscious, or sophisticated people.

例句

They booked a table at one of the smartest restaurants in London.

superlative: the smartest + place noun

The gallery opening was a very smart affair with champagne and celebrities.

同義詞
  • fashionable

    broader, can describe people or places; less class-focused

  • exclusive

    emphasises restricted access rather than style

  • posh

    informal British term for upper-class places

用法筆記

Almost always used before a noun. Describes the social standing of the venue, not its physical tidiness.

3. having a quick, active mind; able to learn new things easily and solve problems

3.形容詞A2
釋義

having a quick, active mind; able to learn new things easily and solve problems well.

例句

Anjali is one of the smartest students in her physics class.

superlative: one of the smartest

It was a smart move to save money before the prices went up.

collocation: smart move

同義詞
  • clever

    similar but can imply tricky or cunning; more British

  • intelligent

    more formal, suggests higher intellectual capacity

  • bright

    more informal, often used for children

反義詞
  • stupid

    the direct opposite in ability to learn or reason

  • dull

    less common, suggests slowness of mind

用法筆記

Can describe either a person's general intelligence or a specific decision/action. 'Smart' in this sense is less formal than 'intelligent' and more natural in everyday speech.

常見錯誤

She is a smart girl who studies.
She is a smart girl who solves problems quickly.
💡show what smart means instead of leaving it vague.

4. done or happening with brisk energy and noticeable force, often describing a phy

4.形容詞B2
釋義

done or happening with brisk energy and noticeable force, often describing a physical action like a blow or a movement.

例句

He gave the ball a smart tap with his racquet.

collocation: smart tap / smart blow

The horse set off at a smart trot across the field.

同義詞
  • brisk

    suggests energetic speed without forcefulness

  • sharp

    implies suddenness and precision in addition to force

反義詞
  • slow

    the opposite in pace

用法筆記

Typically modifies nouns describing physical actions (blow, rap, pace, trot). Not used for emotional or mental speed.

5. describes a machine, device, or weapon that contains a computer chip or software

5.形容詞B1
釋義

describes a machine, device, or weapon that contains a computer chip or software so it can perform tasks automatically or respond to changing conditions.

例句

Indra bought a smart thermostat that adjusts the temperature when nobody is home.

example of autonomous function

Many new cars come with smart sensors that help you park.

同義詞
  • intelligent

    more formal; used in technical writing ('intelligent system')

  • automated

    focuses on lack of human control, not decision-making ability

反義詞
  • dumb

    informal; describes a device without computer control ('dumb phone')

用法筆記

Extremely productive in compound nouns: smartphone, smartwatch, smart TV, smart home, smart grid. The device's 'intelligence' comes from its programming, not its own thinking.

6. used to describe a motorway or major road fitted with computer-controlled system

6.形容詞C1
釋義

used to describe a motorway or major road fitted with computer-controlled systems that monitor traffic flow, adjust speed limits, and display warnings to drivers automatically.

例句

The new smart motorway uses cameras to detect congestion and lower the speed limit.

pattern: smart motorway + uses [technology] to [function]

Drivers were confused by the signs on the smart highway near Manchester.

用法筆記

Primarily used in British English as 'smart motorway'. The term is a specialised extension of the SMART DEVICE sense.

7. tending to say things that are funny but disrespectful, often in a way that show

7.形容詞B2
釋義

tending to say things that are funny but disrespectful, often in a way that shows a lack of proper respect toward someone in authority.

例句

The student gave a smart answer and the teacher sent him to the office.

collocation: smart answer / smart remark

Alessia regretted her smart comment as soon as she saw her grandmother's hurt face.

emotional consequence of a smart remark

同義詞
  • cheeky

    British; less harsh, can be playful

  • sassy

    American; can be approving in some contexts

  • impertinent

    formal and strongly disapproving

反義詞

用法筆記

Often used in the fixed phrase 'get smart with someone', meaning to speak disrespectfully. Strongly disapproving.

常見錯誤

He is always smarting to the teacher.
He is always being smart with the teacher.
💡'smart' as a verb (meaning hurt) is different; the adjective sense uses 'be smart with someone'.

8. producing a sudden, biting physical feeling, like the sting that comes when an o

8.形容詞C1
釋義

producing a sudden, biting physical feeling, like the sting that comes when an open wound meets antiseptic.

例句

He felt a smart sting on his leg where the nettle had brushed against it.

physical stinging sensation

The soap stung the smart cut on her finger.

同義詞
  • stinging

    directly describes the sensation; more common than 'smart'

  • sharp

    broader; describes any acute pain, not necessarily stinging

用法筆記

Less common in modern English; the verb form is used more frequently than this adjective sense.

smart — adverb

smart — noun

smart — verb