If you describe a situation, experience, or activity as uncharted territory or waters, you mean that it is new or unfamiliar.
Carter's fourth album definitely moves into uncharted territory.
...a largely uncharted area of medical science.
Synonyms: unexplored, unknown, undiscovered, strange More Synonyms of uncharted
uncharted in British English
(ʌnˈtʃɑːtɪd)
adjective
(of a physical or nonphysical region or area) not yet mapped, surveyed, or investigated
uncharted waters
the uncharted depths of the mind
uncharted in American English
(ʌnˈtʃɑrtɪd)
adjective
not marked on a chart or map; unexplored or unknown
Examples of 'uncharted' in a sentence
uncharted
Yet between now and then there is much uncharted territory to be crossed, constitutionally and legally.
Times, Sunday Times (2016)
The album may venture into uncharted territory, but it sounds like second nature.
Times, Sunday Times (2016)
This led the FTSE 100 into uncharted territory.
Times, Sunday Times (2016)
We would be in uncharted constitutional territory.
Times, Sunday Times (2012)
For the journey from politics to football is a largely uncharted one.
Times, Sunday Times (2011)
We hope that will not happen but this is uncharted territory.
Times, Sunday Times (2012)
This episode moves the comedy a few tentative steps into uncharted territory.
Times, Sunday Times (2013)
She has the resources to draw us into uncharted territory.
Times, Sunday Times (2015)
In doing so the partnership will be entering uncharted territory.
Times, Sunday Times (2008)
But here the story careers off into wholly uncharted territory.
Times, Sunday Times (2010)
But finding them is not a question of exploring uncharted territory.
Brennan, J. H. A Guide to Megalithic Ireland (1992)
We are going into uncharted territory.
The Sun (2009)
It felt like completely uncharted territory.
The Sun (2013)
British politics is in uncharted territory.
Times, Sunday Times (2006)
No foreign navy stood a chance against the Venetian fleet in its uncharted maze of islands.
Times, Sunday Times (2016)
This takes it into largely uncharted territory, although it already has two licenses there.
Times, Sunday Times (2012)
These Paralympics have taken this message into uncharted territory.
Times, Sunday Times (2012)
The Western financial system is entering uncharted territory.
Times, Sunday Times (2008)
Last week came the sickening lurch, the sudden drop into uncharted territory.
Times, Sunday Times (2008)
Far from business as usual, this squeeze will take us into very new and largely uncharted territory.
Times, Sunday Times (2009)
Many doctors have also turned to it for information and advice on the management of a syndrome still largely uncharted in the medical literature.
Trickett, Shirley Coming Off Tranquillizers and Sleeping Pills (1991)
This largely uncharted subject matter brings its own complications, not least the danger of slipping into reportage or polemic.
The Times Literary Supplement (2013)
Many are eager to use it when it reinforces their settled positions, but they become skittish when it moves into uncharted areas.
Christianity Today (2000)
They kick things off with the search for evidence of life on Mars and ask viewers to help explore an uncharted area of the red planet.
Times, Sunday Times (2013)
A family's holiday to Bermuda goes badly wrong when they are shipwrecked on an uncharted island.
The Sun (2009)
I've been anxious about the potential awkwardness of a meeting and worried about possible financial liabilities that could come out of this largely uncharted legal territory.
Times, Sunday Times (2007)
(adjective)
Definition
unknown or unfamiliar
a largely uncharted area of medical science
Synonyms
unexplored
unknown
a perilous expedition, through unknown terrain
undiscovered
strange
I ended up alone in a strange city.
virgin
unfamiliar
She grew many plants that were unfamiliar to me.
unplumbed
not mapped
Usage note
Unchartered is sometimes mistakenly used where uncharted is meant: We did not want to pioneer in completely uncharted (not unchartered) territory.