Absence, Ask, Basic, Beggary, Break, Call, Charge, Claim, Commitment, Committal, Constraint, Covet, Crave, Curiosity, Dearth, Defect, Defectiveness, Deficiency, Deficit, Demand, Deprivation, Desideratum, Desire, Destitution, Devoir, Difficulty, Discontinuity, Distress, Drive, Drought, Duty, Eagerness, Emergency, Essential, Essentials, Exact, Exaction, Exigency, Extremity, Famine, Fancy, Fundamental, Gap, Gripe, Hanker, Have, Hiatus, Homelessness, Hope, Hunger, Imperfection, Impoverishment, Incompleteness, Indispensable, Insufficiency, Interval, Lack, Lacuna, Libido, Long, Mind, Miss, Must, Necessaries, Necessary, Necessities, Necessity, Occasion, Omission, Ought, Outage, Passion, Paucity, Penury, Pinch, Pine, Pleasure, Poorness, Poverty, Privation, Require, Requirement, Requisite, Requisition, Right, Scarcity, Shortage, Shortcoming, Shortfall, Should, Starvation, Starve, Stress, Thirst, Trouble, Urge, Use, Want, Wanting, Will, Wish, Yearn