Definition of need

• a condition requiring relief; "she satisfied his need for affection"; "God has no need of men to accomplish His work"; "there is a demand for jobs"
• anything that is necessary but lacking; "he had sufficient means to meet his simple needs"; "I tried to supply his wants"
• the psychological feature that arouses an organism to action toward a desired goal; the reason for the action; that which gives purpose and direction to behavior; "we did not understand his motivation"; "he acted with the best of motives"