Definitions

1. adjective

not discovered or mapped; not known or explored

“The uncharted territories of the Amazon rainforest are still largely unknown to outsiders.”

2. noun

a region of the sea that has not been mapped or explored

“The ship sailed into the uncharted waters, careful not to get lost.”

3. verb

to explore or travel through an uncharted region

“We uncharted the river, discovering hidden caves along the way.”