Imperative - Definition

adj 1: requiring attention or action; "as nuclear weapons
proliferate, preventing war becomes imperative";
"requests that grew more and more imperative" [ant:
beseeching, imploring, pleading]
2: relating to verbs in the imperative mood
n 1: a mood that expresses an intention to influence the
listener's behavior [syn: imperative mood, imperative,
jussive mood, imperative form]
2: some duty that is essential and urgent