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self-suf·fi·cient • adj. needing no outside help in satisfying one's basic needs, esp. with regard to the production of food: I don't think Botswana, due to the climate, could ever be self-sufficient in food. ∎  emotionally and intellectually independent: their son was a little bit of a loner and very self-sufficient.DERIVATIVES: self-suf·fi·cien·cy n.self-suf·fi·cient·ly adv.