au·ton·o·mous·ly
/əˈtänəməslē/
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adverb
adverb: autonomously
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with the freedom to act independently."each canton in Switzerland operates almost autonomously"/ Were you trying for "autonomic"? Autonomic describes things that the body does without any thought being required-- like regulating breathing. You can control breathing with thought and effort but most of the time, it is done autonomically..
autonomously