that which is required; a thing demanded or obligatory

One of the requirements of the job is accuracy.

an act or instance of requiring.

a need or necessity

to meet the requirements of daily life.

noun

claim , compulsion , concern , condition , demand , desideratum , element , engrossment , essential , exaction , exigency , extremity , fulfillment , fundamental , imperative , lack , must , need , obligation , obsession , pinch , precondition , preliminary , preoccupation , prepossession , prerequisite , prescription , provision , proviso , qualification , requisite , specification , stipulation , stress , terms , urgency , vital part , want , necessity , sine qua non , command , criterion , formality , requisition