The Oxford Thesaurus An A-Z Dictionary of Synonyms - urgentadj.

1) immediate, instant, imperative, pressing, compelling, vital, life-and-death or life-or-death, important, serious, necessary, exigent, rush, emergency, pressing, high-priority: There was an urgent need to do something at once, so she screamed. 2) supplicative, begging, solicitous, earnest, importunate, insistent, loud, clamorous, active, energetic, pertinacious, tenacious, forceful, firm: Both parties were urgent in pressing for tax reform.