unstudied

Until now, groundwater -- a critical water resource around the globe, especially in dry regions -- has been largely unstudied in its importance and role in sustaining ecosystems.

But environmental campaigners say the deep seabed is the last frontier in the planet that remains largely unstudied and untouched by humanity and mining there could cause irreparable damage, no matter how pressing the need.

Then there is the un-collared and unstudied male mountain lion that has been elusively and peacefully coexisting with humans in the area for at least 10 years.

Ultimately, the impact of long-term use of these supplements, especially in adolescents, is unstudied.

For decades, documents related to Quaker-operated Indian boarding schools have been largely unstudied, as they exist in remote and dispersed collections with limited access, said leaders of the National Native American Boarding School Healing Coalition.