1. Sufficient for one's self without external aid or cooperation.
Neglect of friends can never be proved rational till we prove the person using it omnipotent and self-sufficient, and such as can never need any mortal assistance. --South.
2. Having an overweening confidence in one's own abilities or worth; hence, haughty; overbearing. “A rash and self-sufficient manner.”
adj : able to provide for your own needs without help from others;
"a self-sufficing economic unit" [syn: self-sufficing,