IPA: //ʌnˈvɪzɪtɪd//
KK: /ʌnˈvɪzɪtɪd/
Not having been visited by anyone.
The unvisited island remained a mystery to explorers.
Unvisited → It is formed from "un-" (meaning not) and "visited" (from Latin "visitare", meaning to go to see or call upon). The word "unvisited" means not having been visited or not having received visitors.
Think of 'not' ('un-') having been 'called upon' or 'seen' ('visitare') — that's why unvisited means it hasn't been visited.