unutilized
/ˌʌnjuːtɪˈlaɪzd/Definitions
1. adjective
Not used or utilized; unused or unexploited.
“The company had large amounts of unutilized resources that they decided to invest in new projects.”
2. noun
A resource or opportunity that is not being used or utilized.
“The city’s unutilized waterfront area was turned into a public park, bringing new life to the community.”