Main entry: necessary, necessity, essential, requirement, requisite
Definition: anything indispensable
Usage: food and shelter are necessities of life; the essentials of the good life; allow farmers to buy their requirements under favorable conditions; a place where the requisites of water fuel and fodder can be obtained
Main entry: necessary
Definition: unavoidably determined by prior circumstances
Usage: the necessary consequences of one's actions
Main entry: necessary
Definition: absolutely essential