insufficiency

1 a falling short of an essential or desirable amount or number dealt with the school's insufficiency of art supplies by buying materials out of her own pocket Synonyms crunch, dearth, deficit, drought (also drouth), failure, famine, inadequacy, inadequateness, deficiency, lack, lacuna, paucity, pinch, poverty, scantiness, scarceness, scarcity, shortage, undersupply, wantRelated Words absence, omission; meagerness, poorness, skimpiness; necessity, need, privationNear Antonyms bountifulness, copiousness; excess, overabundance, oversupply, surfeit, surplusAntonyms abundance, adequacy, amplitude, opulence, plenitude, plenty, sufficiency, wealth

2 the lack of sufficient ability, power, or means her alleged insufficiency for the job Synonyms impotence, inadequacy, incapability, incapacity, incompetence, incompetency, ineptitude, inability, powerlessnessRelated Words disqualification, inaptitude; ineffectiveness, ineffectuality, ineffectualness, inefficaciousness, inefficacy, inefficiencyNear Antonyms aptitude, bent, endowment, flair, genius, gift, knack, talent; effectiveness, effectualness, efficaciousness, efficiency; fitness, suitability, suitableness; potency, power, puissance, sinew, strengthAntonyms ability, adequacy, capability, capacity, competence, competency, potency