IPA: /nɒnɪnˈvɒlvmənt/
KK: /nɑnɪnˈvɑlvmənt/
The state of not being involved in something, especially in situations or activities that concern others.
His noninvolvement in the project surprised everyone, as he usually takes an active role.
Noninvolvement → It is formed from "non-" (meaning not) and "involvement" (from the root "involve" which comes from Latin "involvere", meaning to roll in or envelop). The word "noninvolvement" means the state of not being involved or engaged in something.
Think of 'not' ('non-') being part of something that 'envelops' or 'rolls in' ('involvere') — that's why noninvolvement means not being engaged.