Important

7 clues
Urgent!
Momentous
Significant
Part of V.I.P.
Part 2 of quote
Like a big shot
Certain e-mail flag
Similar answers:
Admissionimpossible
Alertantbrigade
Allimportant
Almostimpossible
Areimportant
Concertante
Fissionimpossible
Greatimportance
Impimportsorts
Impof
Impolite
Impolitic
Imponderable
Imponderables
Import
Importable
Importance
Importandexport
Important
Importantevents