IPA: /nɒnˈkɒnʃəs/
KK: /nɑnˈkɑnʃəs/
Not aware or not having awareness of something; occurring without conscious thought.
Many of our decisions are made on a nonconscious level, without us realizing it.
Nonconscious → It is formed from "non-" (meaning not) and "conscious" (from Latin "conscire", meaning to be aware or to know). The word "nonconscious" refers to a state of not being aware or not having knowledge of something.
Think of 'not' ('non-') being aware ('conscious') — that's why nonconscious means not aware.