utility

utility — noun

1. one of the basic services like electricity, gas, or water that homes and busines

1.名詞B1
釋義

one of the basic services like electricity, gas, or water that homes and businesses rely on every day.

例句

The storm damaged power lines, so the utility company sent workers to restore the electricity.

collocation: utility company / utility bill / utility service

Jin called the water utility to report a leak in the pipe outside his house.

同義詞
  • service

    broader term that includes non-essential services; utility specifically implies essential public services

  • amenity

    more formal and often refers to features that add comfort rather than essential supplies

用法筆記

Frequently used attributively before nouns like company, bill, service, or provider to specify which aspect of the service is being discussed.

常見錯誤

The government built a new utility.
The government approved a new utility plant.
💡utility alone does not refer to the physical building or equipment; it refers to the service itself.

2. a business that provides a public service such as electricity, gas, or water to

2.名詞B1
釋義

a business that provides a public service such as electricity, gas, or water to customers.

例句

Large utility companies often invest billions in maintaining power grids and pipelines.

collocation: utility companies

Walid works for a local utility that supplies drinking water to three nearby towns.

同義詞
  • public utility

    more formal term that legally defines a company serving the public interest under government regulation

  • service provider

    broader term that includes non-essential services such as internet or phone

用法筆記

This sense is often used in the plural (utilities) to refer to utility companies collectively, particularly in financial or regulatory contexts.

常見錯誤

The utility repaired the road.
The utility company sent workers to repair the road.
💡the utility company is the organization; 'utility' alone can refer to either the service or the company depending on context.

3. how practical and helpful something is for achieving a particular goal.

3.名詞B1
釋義

how practical and helpful something is for achieving a particular goal.

例句

Lakan questioned the utility of buying a tablet when his laptop already worked well.

question + the utility of + gerund

The utility of this small tool became clear when Andrei needed to fix his bicycle.

同義詞
  • usefulness

    less formal, preferred in everyday speech; utility is more common in formal or analytical writing

  • practicality

    emphasizes ease of use or suitability for real-world conditions rather than general usefulness

  • value

    broader term that can include emotional or financial worth, not just practical function

反義詞
  • uselessness

    direct opposite; the state of having no practical purpose

用法筆記

Typically uncountable. Often preceded by an adjective (great, limited, little, practical) or the preposition 'of' (the utility of something). More formal than usefulness.

常見錯誤

I need to check the utility of this phone.
I need to check how useful this phone is.
💡utility as 'usefulness' is abstract and formal; in everyday conversation, 'how useful' sounds more natural.

4. a computer program that performs a specific supporting task, such as compressing

4.名詞B2
釋義

a computer program that performs a specific supporting task, such as compressing files, converting data, or scanning for viruses.

例句

Gabriel downloaded a free utility to convert video files into MP3 format.

download + a utility + to-infinitive purpose

This utility scans your computer for duplicate photos and helps you remove them.

同義詞
  • tool

    broader term that can refer to any software or hardware used to accomplish a task

  • program

    any piece of software; utility specifies a supporting or maintenance role rather than a main application

  • app

    modern term for any application; utility emphasizes the practical supporting function

用法筆記

This sense takes modifiers specifying the tool's function: disk utility, file utility, backup utility, or system utility. Often countable (a utility, several utilities).

utility — adjective