Learn how to say Uncharted Territory correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word uncharted:
(of an area of land or sea) not mapped or surveyed:
the plane landed on a previously uncharted islet
an uncharted region of space
the present study is a foray into uncharted territory
Uncharted means ‘not yet mapped or surveyed’. Especially in the phrase uncharted territory, it is confused with unchartered, a far less common word that means ‘not having a charter or written constitution’. Unchartered territory constitutes around 10 per cent of the total citations for the phrase in the Oxford English Corpus.