self-sufficient

Adjective

self-sufficient (comparative more self-sufficient, superlative most self-sufficient)

1. Able to provide for oneself independently of others; not needing external support.
   • Over the next few decades, several million humans immigrated to Eden Prime and a primarily agrarian culture developed. The new colony quickly became not only self-sufficient, but began exporting goods.2012, BioWare, Mass Effect 3: From Ashes (Science Fiction), Redwood City: Electronic Arts, PC, scene: Planets and Locations: Eden Prime Codex entry
2. (obsolete) Overconfident in one's own abilities; arrogant.
   • In spite of these conscientious reflections, he was too self-sufficient to think he should find any difficulty in obtaining forgiveness for these sins of omission […].1751, [Tobias] Smollett, The Adventures of Peregrine Pickle […], volume (please specify |volume=I to IV), London: Harrison and Co., […], →OCLC
   • To rescue London from this short-termism, Byford has put forward a deal that would fill the current gap of £500m annually, explaining: "If we can fill that gap, we can get back to being self-sufficient by 2023."2021 October 6, Christian Wolmar, “Both sides must work together to get London back on track”, in RAIL, number 941, page 35