self-sufficient

adj

Etymology: From self- + sufficient, a calque of Ancient Greek αὐτάρκης (autárkēs).

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.”

2. 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 […].”

   “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."”