command

command — noun

1. a spoken or written instruction telling a person or animal what to do, especiall

1.nounB2
Definition

a spoken or written instruction telling a person or animal what to do, especially in a military or official setting

Example

The captain gave a clear command for the troops to advance toward the bridge.

command + for + person + to-infinitive

Hana's dog obeyed her command to stay perfectly still for the photo.

obey someone's command

Common collocations
  • give a command
  • issue a command
  • obey a command
  • carry out a command
  • follow a command
Synonyms
  • order

    less formal; used in everyday situations

  • instruction

    less authoritative; often about a procedure

  • directive

    more formal; used in official or corporate contexts

Antonyms
  • request

    a polite asking rather than an authoritative demand

Usage Note

Stronger and more formal than 'order'. 'Command' is often used in military, official, or hierarchical contexts. Common verbs paired with it: 'give', 'issue', 'obey', 'follow', 'carry out'.

Common Mistakes

He made a command to his dog.
He gave a command to his dog.
'Make a command' is not idiomatic; use 'give' or 'issue'.

2. the power to direct a situation, team, or organization and make the key decision

2.nounC2
Definition

the power to direct a situation, team, or organization and make the key decisions about what will happen

Example

After the earthquake, the mayor took command of all rescue operations in the city.

take command of something

General Kofi was put in command of the entire peacekeeping mission in the region.

in command of something

Common collocations
  • take command of
  • in command of
  • have command of
  • assume command
  • under someone's command
Synonyms
  • authority

    broader legal or formal right to act

  • control

    more general; not limited to formal hierarchy

  • leadership

    focuses on guiding others rather than giving orders

Antonyms
  • submission

    state of being under someone else's control

Usage Note

Commonly used with prepositions 'of' or 'over'. Often appears in military, organizational, or emergency-response contexts. Contrast with noun sense 1: sense 1 is a specific instruction; sense 2 is ongoing authority.

3. an instruction that tells a computer, program, or device to perform a specific o

3.nounC1
Definition

an instruction that tells a computer, program, or device to perform a specific operation

Example

Ravi typed a simple command to delete all the temporary files from the server.

type + command + to-infinitive

The program stopped working because Tomás entered an invalid command at the prompt.

enter + command

Common collocations
  • type a command
  • enter a command
  • run a command
  • execute a command
  • command prompt
  • command line
Synonyms
  • instruction

    more general; can refer to any step in code

  • directive

    less common in computing; often used for configuration

  • statement

    a broader unit of code that may contain commands

Usage Note

Commonly used in terminal/command-line contexts. Verbs: 'type', 'enter', 'run', 'execute', 'issue'. A 'command' can also be a voice instruction to a virtual assistant.

Common Mistakes

I gave the computer a command.
I typed / ran a command on the computer.
In computing contexts, 'give' is less natural than 'type', 'enter', or 'run'.

4. the ability to use a skill or subject with a high level of understanding and ski

4.nounB2
Definition

the ability to use a skill or subject with a high level of understanding and skillfulness

Example

Dr. Okafor has an impressive command of three different programming languages.

command of [language / subject]

Nadia's command of Japanese grammar impressed all of her university professors.

Common collocations
  • command of language
  • command of a subject
  • good command of
  • strong command of
  • thorough command of
Synonyms
  • mastery

    implies total control and expert-level understanding

  • proficiency

    focuses on competence and skill level

  • fluency

    specifically about language ability; smoothness of use

Antonyms
  • ignorance

    complete lack of knowledge about a subject

Usage Note

Always followed by 'of' (command of a subject/language/skill). Often modified by adjectives like 'good', 'strong', 'excellent', 'thorough', 'perfect'.

Common Mistakes

She has command in French.
She has a good command of French.
Use 'of', not 'in', and include an adjective before 'command'.

5. a wide view of an area that can be seen from a high or favourable position

5.noun
Definition

a wide view of an area that can be seen from a high or favourable position

Example

The hotel balcony gave a wonderful command of the entire valley and the river below.

command of [area] — view sense

From the tower, the soldiers had a full command of the harbor entrance.

Common collocations
  • command of the valley
  • command of the harbor
  • fine command of
Synonyms
  • view

    the general neutral term; lacks the 'from a high position' element

  • panorama

    emphasizes a wide, unbroken view in all directions

Usage Note

This sense is quite literary and less common in everyday speech. The related adjective 'commanding' (as in 'a commanding view') is more frequently used in modern English.

6. soldiers, military personnel, or territory placed under the responsibility of a

6.noun
Definition

soldiers, military personnel, or territory placed under the responsibility of a single commanding officer

Example

The entire command was ordered to relocate to a base closer to the border.

entire command — referring to the unit

Colonel Yusuf took charge of the southern command during the conflict.

southern / eastern / central command

Common collocations
  • a military command
  • take command of a unit
  • southern command
  • central command
Synonyms
  • unit

    a smaller group; narrower scope than a command

  • brigade

    a specific military unit size, smaller than a command

  • division

    a larger formation, but less broad than a command area

Usage Note

Typically goes with a geographic or functional label (e.g., 'Central Command', 'Training Command'). Capitalized when part of an official name.

Idioms

available for someone to use whenever they need it

As the head chef, Beatriz has a full kitchen staff at her command every evening.

The billionaire had a private jet and a fleet of cars at his command at all times.

to know a lot about a subject or be very skilled at using something, such as a language or instrument

To get the job, you need to have a good command of written and spoken English.

Diego has a very good command of the violin for someone who has only been playing for three years.

to start being in charge of a situation, group, or organization

When the fire broke out, a nearby police officer immediately took command of the scene.

It took the new CEO several months to really take command of the struggling company.

working for a particular leader who is in charge of you

Rashida served under the general's command for more than five years before retiring.

Every sailor under the captain's command knew exactly what to do during the storm.

If you have a skill or resource at your command, you can use it fully and effectively.

Maya has a wide vocabulary at her command for writing essays.

With all the data at his command, Brian solved the problem quickly.

To be ready and willing to obey someone completely.

The soldiers are at the general's command and follow his orders.

Sara said, 'I am at your command; tell me what to do.'

Used to express that you are eager to do whatever someone asks.

When the boss asked for coffee, Diego said, 'Your wish is my command.'

Aiden smiled and replied, 'Your wish is my command, madam.'

command — verb

command — adjective

Word family

Synonym discussion

Sense: verb/1

All four words involve making someone do something, but they differ in authority and formality. 'Command' is the strongest and most formal — it implies unquestionable authority, especially in military or official settings ('The general commanded the troops to withdraw'). 'Order' is also authoritative but more flexible, used in both formal and everyday contexts ('The doctor ordered him to rest'). 'Direct' is neutral and professional, common in workplace settings ('The manager directed the team to finish the report'). 'Instruct' focuses on teaching the steps and often includes how to do something ('The instructor told us how to use the equipment'). 'Tell' is the most general and least formal ('She told me to wait outside'). For a superior giving a direct order with full expectation of obedience, use 'command'. For routine instructions in less hierarchical settings, 'tell', 'instruct', or 'direct' are more natural.

Common collocations

Phrases

  • at one's command
  • by command of
  • in command of
  • under the command of
  • take command of
  • have command of

Etymology

LatinFrenchEnglish

The word 'command' entered English through Old French 'comander' (to order), which came from Vulgar Latin 'commandare'. This Latin root is a combination of 'com-' (with, together) and 'mandare' (to entrust, to order). The original sense was 'to entrust to someone's charge', which later shifted toward giving authoritative orders. The computing meaning emerged in the mid-20th century with the rise of digital computers and command-line interfaces.