Synonyms for Require:

n.

order around, tax with, instruct, boss around, push around, tell. order, look for, dictate, cry out for, requisition, challenge, rely on, could do with something, entail, depend on. over, necessary. owned. insist on. suppose, obligation. require (noun)
need, involve, expect, call for, command, want, take, demand, ask, compel, postulate, necessitate.

v.

ask, demand; necessitate (verb)
challenge, obligate, entail, oblige, expect, involve, instruct, compel, demand, command, constrain, look for, call for, take, order, postulate, requisition.
lack (verb)
miss, want, lack, default.
need, want (verb)
miss, lack.
oblige (verb)
necessitate, favor, accommodate, constrain, need, indulge, demand, oblige.
require (verb)
obligate, compel, stipulate, mandate, bind.

Other synonyms:

push around, order around, cry out for. tax with, dictate. instruct. depend on. tell. order. desire
want.
expect
look for.
occasion
entail.
Other relevant words:
ask, challenge, dictate, suppose, entail, call for, order, postulate, requisition, look for, cry out for, insist on, expect, take, tell, command, involve, instruct.

Usage examples for require

  1. Have you such a room as I require – First Person Paramount by Ambrose Pratt
  2. Any of the above preparations may be repeated, as circumstances seem to require – The American Reformed Cattle Doctor by George Dadd
  3. How much time do you require – The Extraordinary Adventures of Arsene Lupin, Gentleman-Burglar by Maurice Leblanc