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require
/rɪˈkwaɪər/
need something
This job requires a degree in computer science.
This job needs a degree in computer science as a necessary qualification.
formal
To need something because it is essential or very important
The university requires all students to submit a thesis.
The university mandates that all students submit a thesis as part of their graduation.
These plants require direct sunlight to grow.
These plants need constant exposure to sunlight to thrive.
Often used in formal contexts like laws, contracts, or instructions. Can imply a rule or obligation rather than a simple need.
Law
formal
To demand or insist on something as part of an agreement or rule
The contract requires both parties to sign the document.
The contract legally obligates both parties to sign the document.
Common in legal, business, or technical contexts to denote a mandatory condition.
formal
To make it necessary for someone to do something
The situation requires us to act quickly.
The situation makes it necessary for us to take immediate action.
Often used in problem-solving or decision-making contexts.
Collocations
require something of someonedemand a particular quality or action from someonerequire attentionneed to be dealt with or considered carefullyrequire proofneed evidence to support a claim or decision
Antonyms
Related Phrases
Pro Tip
Formal vs. Informal Use
Use 'require' in formal contexts (e.g., contracts, instructions) and 'need' in casual speech. 'Require' sounds more authoritative, while 'need' is softer.
Gold Rule
Avoid Redundancy
Don’t pair 'require' with 'must' or 'have to'—e.g., 'This job requires you must have a degree' is incorrect. Use 'requires a degree' instead.
Word Origin
From Old French *requirer* (to seek, ask for), from Latin *requirere* (to seek again, search for), from *re-* (again) + *quaerere* (to seek).
Usage Notes
Avoid using 'require' interchangeably with 'want' or 'desire'—'require' implies necessity, not preference. In formal writing, 'required' is often used as an adjective (e.g., 'required reading').
Word Breakdown
re-
again, back
prefix-quire
to seek
rootEnglish Dictionary