The phrase "imperative need" means that something is extremely important or necessary.
Sentences with «imperative need»
25 Senseless Death in Havana A cluster of tragically empty shoes focuses auto racing's imperative need for spectator safety (si.com)
It has been more and more imperative the need of looking for an ally that can get done these essays in a quick way at affordable prices and with the guarantee of punctual delivery. (weeklyessay.com)
(2) A substitutive view holds that the church enters the realm of service in society only when the latter's institutions are inadequate to meet imperative needs. (religion-online.org)