4 synonym groups for Necessity

require, necessitate, demand, want, crave, desire, yearn for, be in want of, be in need of, be desperate for, be short of, lack, call for, require urgently, have need of, be without, be deficient in, be deprived of, be lacking in, be wanting, be in dire need of, be in dire straits for, be in great need of, be in great want of, be in great demand for, be in great necessity for, be in great requirement for, be in great desire for, be in great craving for, be in great yearning for, be in great shortfall of, be in great deficiency of, be in great deprivation of, be in great lack of, be in great necessity of, be in great requirement of, be in great desire of, be in great craving of, be in great yearning of [x]

requirements, demands, needs, necessities, urgencies, pressures, constraints, stipulations, requisites, obligations, imperatives, contingencies, essentials, prerequisites, conditions, exigents, crises, emergencies, calls, insistences, compulsions [x]

urge, drive, impulse, obsession, force, pressure, coercion, constraint necessity, obligation, demand, requirement, duress, mania, fixation, need, craving, addiction, insistence, enforcement, domination, control, command, imperative, dictate, push, impetus, motivation, inducement, influence, sway, compunction, preoccupation, fervor, passion, zeal, fervency, enthusiasm, determination, resolve, tenacity, persistence, perseverance, relentlessness, doggedness, single-mindedness, inflexibility, intransigence, stubbornness [x]

vitality, essence, lifeline, core, heart, soul, backbone, driving force, mainstay, foundation, cornerstone, crux, nucleus, pith, quintessence, spirit, substance, wellspring, elixir, life force, animating force, vital force, energy, vigor, strength, dynamism, power, sap, juice, lifeblood [x]