1620s, "force irresistably, compel, oblige," also "make necessary, render unavoidable," from Medieval Latin necessitatus, past participle of necessitare "to render necessary," from Latin necessitas "compulsion; destiny" (see necessity). Earlier verb in English was necessen (late 14c.). Related: Necessitated; necessitates; necessitating.
nebulosity
nebulous
necessarily
necessary
necessitarian
necessitate
necessitation
necessity
neck
neck-band
necked