IPA: /nɒnˈdʒʊdʒɪəl/
KK: /nɑnˈdʒudɪʃəl/
Not related to the legal system or the powers of a judge.
The case was resolved through nonjudicial means, avoiding the court system altogether.
Nonjudicial → It is formed from "non-" (meaning not) and "judicial" (from Latin "judicialis", meaning pertaining to judgment). The word "nonjudicial" refers to something that is not related to or does not involve a court or legal judgment.
Think of 'not' ('non-') being related to 'judgment' ('judicial') — that's why nonjudicial means something that does not involve a court or legal judgment.