From WordNet (r) 3.0 (2006):
require
v 1: 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" [syn: necessitate, ask,
postulate, need, require, take, involve, call
for, demand] [ant: eliminate, obviate, rid of]
2: 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" [syn: ask, require, expect]
3: make someone do something [syn: command, require]
4: have need of; "This piano wants the attention of a competent
tuner" [syn: want, need, require]