Other forms: uninhabitably
When it's impossible to live somewhere, that place is uninhabitable. A house is uninhabitable if is missing basic things like a roof and heat.
Buildings are considered uninhabitable when they are dangerous, with holes in the floor, or exposed electrical wires that pose a fire hazard. It's not safe for people to live in those conditions. Uninhabitable regions of the world might be too cold or too hot — or, in the case of Brazil's Ilha da Queimada Grande, or "Snake Island," they might be overrun with venomous snakes.