Without being aware of what you're doing or thinking; in a way that happens without your conscious mind directing it.
From 'unconscious' (Latin 'un-' + 'conscious' from 'conscire' meaning 'to know together'). The adverbial form '-ly' was added to make it describe how something happens without awareness.
Your brain is constantly doing things 'unconsciously'—like balancing on your feet while walking or breathing—and it turns out your brain does so much more than you realize without you ever thinking about it! Neuroscience has shown that most of what your brain does happens outside your conscious awareness.
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