requirement

UK: /rɪˈkwaɪə^rmənt/ US: (ri kwī^ər′mənt)

WordReference Random House Unabridged Dictionary of American English © 2025

re•quire•ment  (ri kwī^ər′mənt), n. 

1. that which is required;
   a thing demanded or obligatory:
   One of the requirements of the job is accuracy.
2. an act or instance of requiring.
3. a need or necessity:
   to meet the requirements of daily life.

• require + -ment 1520–30

Synonyms

• 1. Requirement, requisite refer to that which is necessary. A requirement is some quality or performance demanded of a person in accordance with certain fixed regulations:
  requirements for admission to college.
  A requisite is not imposed from outside; it is a factor which is judged necessary according to the nature of things, or to the circumstances of the case:
  Efficiency is a requisite for success in business.
  Requisite may also refer to a concrete object judged necessary:
  the requisites for perfect grooming.
• 2. order, command, injunction, directive, demand, claim.

Collins Concise English Dictionary © HarperCollins Publishers::

requirement / rɪˈkwaɪəmənt/ noun

1. something demanded or imposed as an obligation
2. a thing desired or needed
3. the act or an instance of requiring

WordReference Random House Learner's Dictionary of American English © 2025

re•quire /rɪˈkwaɪr/   v., -quired, -quir•ing. 

1. to have need of;
   need:
   [~ + object] He requires medical care.
2. to order (someone) to do something;
   demand, esp. with authority: [~ + object + to + verb]
   The judge required the witness to testify.
   [~ + that clause]
   The judge required that the witness testify.
   [no object]
   to do as the law requires.
3. to make necessary:
   [~ + object] The work required great patience.
4. to place (someone) under an obligation to do something:
   [not: be + ~-ing* ~ + object + to + verb] You are required to answer all questions.

re•quire•ment, n. [countable] See -quir-.

WordReference Random House Unabridged Dictionary of American English © 2025

re•quire  (ri kwī^ər′), v., -quired, -quir•ing. 
v.t. 

1. to have need of;
   need:
   He requires medical care.
2. to call on authoritatively;
   order or enjoin to do something:
   to require an agent to account for money spent.
3. to ask for authoritatively or imperatively;
   demand.
4. to impose need or occasion for;
   make necessary or indispensable:
   The work required infinite patience.
5. to call for or exact as obligatory;
   ordain:
   The law requires annual income-tax returns.
6. to place under an obligation or necessity:
   The situation requires me to take immediate action.
7. British Terms [Chiefly Brit.] to desire;
   wish to have:
   Will you require tea at four o'clock?

v.i. 

8. to demand;
   impose obligation:
   to do as the law requires.

• Latin requīrere, equivalent. to re- re- + -quīrere, combining form of quaerere to seek, search for (compare quest)
• Middle English requiren 1300–50

re•quir′a•ble, adj. 
re•quir′er, n. 
Synonyms

• 1. See lack. 
• 3. See demand. 
• 6. obligate, necessitate.

Antonyms

• 3. forgo.