urgent
I
adjective
clamant, compelling, compulsory, critical, crucial, crying, demanding, earnest, essential, exigent, grave, gravis, impelling, imperative, important, importunate, indispensable, insistent, instant, necessarius, necessary, necessitous, pressing, required, serious, vital, weighty
II
index
compulsory, critical (crucial), crucial, essential (required), exigent, grave (important), imperative, indispensable, insistent, mandatory, necessary (required), obligatory, peremptory (imperative), provocative, requisite, vehement, vital
Burton's Legal Thesaurus.
William C. Burton.
2006