Necessary

nes′es-sar-i, adj. that must be: that cannot be otherwise: unavoidable: indispensable: under compulsion: not free.— n. that which cannot be left out or done without (food, .)—used chiefly in pl. : a privy.— ns. Nece ā′rian , one who holds the doctrine of nece ity; Nece ā′rianism , the doctrine that the will is not free, but subject to causes without, which determine its action.— adv. Nec′e arily .— n. Nec′e arine , the state or quality of being nece ary.— Nece ary truths , such as cannot but be true. [Fr.,—L. nece arius .]