IPA: /ˌʌn.rɪˈpɔː.tɪd/
KK: /ʌnˈrɛpɔrtɪd/
Describing something that has not been officially reported or documented.
The unreported incidents raised concerns among the community.
Unreported → It is formed from "un-" (meaning not) and "report" (from Latin "reportare", meaning to carry back or bring back). The word "unreported" means not carried back or not brought back, indicating something that has not been reported.
Think of 'not' ('un-') bringing back information ('report') — that's why unreported means something that hasn't been reported.