imperative
1. [ adjective ] requiring attention or action
Examples:

"as nuclear weapons proliferate, preventing war becomes imperative" "requests that grew more and more imperative"

Related terms: beseeching pressing clamant commanding desperate adjuratory assertive
2. [ noun ] (grammar) a mood that expresses an intention to influence the listener's behavior
Synonyms: jussive_mood imperative_mood
Related terms: mood
3. [ adjective ] (grammar) relating to verbs in the imperative mood
Related terms: grammar imperative_mood
4. [ noun ] (sociology) some duty that is essential and urgent
Related terms: duty
Similar spelling:   imperatively
  imperfective
  imperforate
  Imperato
  impersonate
  inoperative
  imperceptible
  imperturbable
  imperil
  impertinent
  imperial
  impertinence
  impersonator
  imperviable
  imperfection
  impermeable
  impersonation
  imperious
  improper
  imperfect
  imperceptibly
  impertinently
  imperially
  impervious