Exacting or requiring immediate aid or action; pressing; critical.
requiring precise accuracy; "an exacting job"; "became more exigent over his pronunciation"
Exigency; pressing necessity; decisive moment.
demanding attention; "clamant needs"; "a crying need"; "regarded literary questions as exigent and momentous"- H.L.Mencken; "insistent hunger"; "an instant need"
The name of a writ in proceedings before outlawry.
a problem perceived as important because it threatens society, compelling the search for a solution