IPA: //ʌnˈpruːvən//
KK: /ʌnˈpruvən/
Something that has not been shown to be true or valid through evidence or testing.
The scientist presented an unproven theory that needed further research.
Unproven → It is formed from "un-" (meaning not) and "proven" (from Latin "probare", meaning to test or prove). The word "unproven" means not tested or not established as true.
Think of 'not' ('un-') having been 'tested' ('probare') — that's why unproven means something that hasn't been proven.