self-sufficient
adjective
self-suf·fi·cient
ˌself-sə-ˈfi-shənt
1
: able to maintain oneself or itself without outside aid : capable of providing for one's own needs
a self-sufficient farm
2
: having an extreme confidence in one's own ability or worth : haughty, overbearing
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Merriam-Webster unabridged
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