IPA: /ˌʌnɪnˈvɒlvd/
KK: /ʌnɪnˈvɑlvd/
Not taking part in something; showing no interest or concern about a situation or event.
She remained uninvolved in the discussion, preferring to listen rather than participate.
Uninvolved → It is formed from "un-" (meaning not) and "involved" (from Latin "involvere", meaning to roll in or envelop). The word "uninvolved" means not rolled in or not engaged in a situation.
Think of 'not' ('un-') being added to 'involved', which means to be engaged. So, uninvolved means not engaged in something.