IPA: /nɒnˈɛkspɜːt/
KK: /nɑnˈɛkspɜrt/
A person who does not have specialized knowledge or skills in a particular area.
As a nonexpert, I found the technical details of the project quite confusing.
Nonexpert → It is formed from "non-" (meaning not) and "expert" (from Latin "expertus", meaning experienced or skilled). The word "nonexpert" refers to someone who is not skilled or experienced in a particular field.
Think of 'not' ('non-') being added to someone who is 'skilled' ('expert') — that's why a nonexpert is someone who lacks expertise.