IPA: //nɒnəˈfɪlɪeɪtɪd//
KK: /nɑnəˈfɪlɪeɪtɪd/
Not connected or associated with a particular group or organization.
The candidate ran as a nonaffiliated individual, without the backing of any political party.
Nonaffiliated → It is formed from "non-" (meaning not) and "affiliated" (from Latin "affiliatus", meaning to adopt or to associate). The word "nonaffiliated" means not associated or adopted by any group or organization.
Think of 'not' ('non-') being connected to 'associated' ('affiliatus') — that's why nonaffiliated means not being part of any group.