Dictionary entries for 'require'

Synonyms

ask
call for
demand
entail
involve
necessitate
take
lack
need
want
call for
claim
demand
exact
insist on
requisition
expect
suppose

re·quire (rĭ-kwīŕ)

[Middle English requiren, from Old French requerre, from Vulgar Latin* requaerere, alteration (influenced by quaerere, to seek), of Latin requīrere, re-, re-, + quaerere, to seek.]

transitive verb: -quired, -quir·ing, -quires.

To have as a requisite; need: Most plants require sunlight.
To call for as obligatory or appropriate; demand. See synonyms at demand
To impose an obligation on; compel: Students are required to attend classes.

derivatives

re·quiŕa·ble: adjective
re·quiŕer: noun

transitive verb: -quired, -quir·ing, -quires.

derivatives

The American Heritage® Dictionary of the English Language, Fourth Edition