IPA: /ˌʌnɪnˈkloʊzd/
KK: /ʌnɪnˈkloʊzd/
Not surrounded or closed off by a barrier or boundary.
The garden was left unenclosed, allowing animals to roam freely.
Unenclosed → It is formed from "un-" (meaning not) and "enclose" (from Old French *enclore*, meaning to shut in or confine). The word "unenclosed" means not shut in or confined, referring to something that is open or free.
Think of 'not' ('un-') shutting something 'in' ('enclose') — that's why unenclosed means something that is open and not confined.