Source : Webster's Revised Unabridged Dictionary (1913)

Self-sufficing \Self`-suf*fi"cing\, a.
   Sufficing for one's self or for itself, without needing
   external aid; self-sufficient. -- {Self`-suf*fi"cing*ness},
   n. --J. C. Shairp.

Source : WordNet®

self-sufficing
     adj : able to provide for your own needs without help from others;
           "a self-sufficing economic unit" [syn: {self-sufficient},
            {self-sustaining}]