Of or pertaining to necessity or necessitarianism: opposed to libertarian. The Arminian has entangled the Calvinist, the Calvinist has entangled the Arminian, in a labyrinth of contradictions. The advocate of free-will appeals to conscience and instinct — to an a priori sense of what ought in equity to be. The necessitarian falls back upon the experienced reality of facts. Froude, Calvinism. (The Century Dictionary, The Century Co., New York, 1911). Wiktionary