require

/ri'kwaiə/
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require

The teacher requires students to raise their hands before speaking.

Definition
  1. Verb:
    • To need something: To have a necessity for something or someone.
    • To demand or order something: To officially state that something must be done or had, often as a rule or condition.
    • To make something necessary: To cause something to be needed as a result of a situation or action.
Usage and Examples

  • To need something:

    • This task requires patience. (You need patience for this task.)
    • The injured man requires immediate medical attention. (The injured man needs immediate medical help.)

  • To demand or order something:

    • The law requires all drivers to have a license. (The law makes it mandatory for all drivers to have a license.)
    • The teacher required the students to submit their essays by Friday. (The teacher ordered the students to hand in their essays by Friday.)

  • To make something necessary:

    • The complexity of the problem requires a sophisticated solution. (The problem's complexity makes a sophisticated solution necessary.)
    • His position requires him to travel frequently. (His job makes frequent travel necessary for him.)
Advanced Usage

  • "To be required to do something": This is a common passive construction indicating an obligation.

    • Passengers are required to fasten their seatbelts. (Passengers must fasten their seatbelts.)

  • "As required" / "If required": Phrases used to indicate something will be done if it is necessary.

    • Additional information will be provided as required. (More information will be given if it is needed.)
Variants and Related Words
  • Requirement (n): Something that is needed or demanded.
    • A valid passport is a requirement for international travel.
  • Requisite (adj/n): Necessary or required; a necessary thing.
    • She lacks the requisite skills for the job. (adj)
    • A university degree is a requisite for this profession. (n)
Synonyms
  • Need: To be in want of something.
  • Demand: To ask for something forcefully.
  • Necessitate: To make something necessary.
  • Mandate: To officially require something.
Phrasal Verbs and Related Constructions
  • "Require of": To ask or expect something from someone.
    • What exactly is required of a team leader? (What are the duties expected from a team leader?)
Idioms and Common Phrases
  • "Required reading": Books or materials that must be read, typically for a course.
    • 'Moby Dick' is required reading for the American literature class.
  • "Meet the requirements": To fulfill the necessary conditions.
    • Does this software meet the system requirements?
require

The teacher requires students to raise their hands before speaking.

Verb
  1. have need of
    • This piano wants the attention of a competent tuner
  2. make someone do something
  3. consider obligatory; request and expect
    • We require our secretary to be on time
    • Aren't we asking too much of these children?
    • I expect my students to arrive in time for their lessons
  4. require as useful, just, or proper
    • It takes nerve to do what she did
    • success usually requires hard work
    • This job asks a lot of patience and skill
    • This position demands a lot of personal sacrifice
    • This dinner calls for a spectacular dessert
    • This intervention does not postulate a patient's consent

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