IPA: /ʌnˈbɪlt/
KK: /ʌnˈbɪlt/
Describing something that has not been constructed or developed yet.
The unbuilt project has been delayed due to funding issues.
Unbuilt → It is formed from "un-" (meaning not) and "built" (the past participle of "build", which comes from Old English "byldan", meaning to construct or create). The word "unbuilt" means not constructed or not created.
Think of 'not' ('un-') having been 'constructed' ('built') — that's why unbuilt means something that has not been constructed.