Blue-sky and Unrecoverable

Blue-sky adjective - Without immediate commercial value.

Unrecoverable and blue-sky are semantically related. In some cases you can use "Unrecoverable" instead an adjective phrase "Blue-sky".

Unrecoverable adjective - Not capable of being cured or reformed.

Blue-sky and unrecoverable are semantically related. Sometimes you can use "Blue-sky" instead an adjective "Unrecoverable".