IPA: /ˌʌnɪkˈsplɔɪtɪd/
KK: /ʌnɪkˈsplɔɪtɪd/
Something that has not been used or developed for any purpose.
The region has many unexploited resources that could benefit the local economy.
Unexploited → It is formed from "un-" (meaning not) and "exploited" (from Latin "exploitatus", meaning to unfold or make use of). The word "unexploited" means not having been made use of or developed.
Think of 'not' ('un-') having been 'made use of' ('exploited') — that's why unexploited means something that hasn't been utilized.