noun
a person or thing that is self-sufficient
adjective
able to provide for oneself without the help of others; independent
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The community aimed to be self-sufficient by growing their own food and generating their own energy.
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My neighbor is so self-sufficient, she can fix anything around the house by herself.
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I'm trying to be more self-sufficient and not rely on anyone for help.
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His ability to adapt and learn quickly made him self-sufficient in any new environment.