IPA: //ʌnˈpruːvd//
KK: /ʌnˈpruːvd/
Something that has not been shown to be true or valid through evidence or testing.
The theory remains unproved despite many experiments.
Unproved → It is formed from "un-" (meaning not) and "proved" (from Latin "probare", meaning to test or demonstrate). The word "unproved" means not tested or not demonstrated to be true.
Think of 'not' ('un-') having been 'tested' ('probare') — that's why unproved means something that hasn't been tested.