benighted

那个与世隔绝的部落仍然愚昧无知，对现代科技毫无了解。

The isolated tribe remained ___benighted, unaware of modern technology.

露营者们在森林里迷了路，天黑后完全陷入了黑暗中。

The campers got lost in the forest and were completely ___benighted after dark.