IPA: /ˌʌnɪnˈdaɪtɪd/
KK: /ʌnɪnˈdaɪtɪd/
Not having been formally accused of a crime in a legal case.
The unindicted individuals were relieved to hear the news of the case being dropped.
Unindicted → It is formed from "un-" (meaning not) and "indict" (from Latin "indictare", meaning to proclaim or announce). The word "unindicted" means not having been formally accused or charged with a crime.
Think of 'not' ('un-') having been 'proclaimed' or 'announced' ('indict') as guilty — that's why unindicted means not formally accused.