TV series example of the word

The Big Bang Theory Season 10, Episode 4
You know, this is uncharted territory for both of us.
মানচিত্রে অপ্রদর্শিত, নকশায় অপ্রদর্শিত
(1) (of unknown regions
(2) (of unknown regions) not yet surveyed or investigated
(3) Unknown
(1) All that was necessary to test that hypothesis was to get on a ship and go to one of these uncharted areas and see.
(2) Proulx is interested in the uncharted territory between American kitsch and genius.
(3) Are the farmers happy to go forward into these companies, which everybody has said go into uncharted territory?
(4) For a professional explorer to stumble upon such uncharted territory can be very chastening.
(5) It was time to delve into uncharted territory: the workings of the handle itself.
(6) We were in uncharted territory and sought out the most conservative response.
(7) For we are out there in virtual space, in virtual time, and in my mind's eye those are dark uncharted zones.
(8) This year's Undead is clearly the work of Jackson disciples, but it also heads into uncharted territory.
(9) The difference between now and the lead-up to the Monaghan match is that they are no longer in uncharted territory.
(10) Keighley visited uncharted territory at Middlesborough based Acklam in their Yorkshire Shield second round tie.
(11) On top of that, the question of involving the private service providers had remained an uncharted field.
(12) It is acknowledged that it would be better if more examples could be located, especially as this is relatively uncharted territory.
(13) They play it with the enthusiasm of pioneers coming upon uncharted and unclaimed land.
(14) It requires going into uncharted areas that may or may not be popular.
(15) Reaching the last 16 at Wimbledon was very much uncharted territory and the hard court season proved even better.
(16) The frontier was not only physical; it was also legal - uncharted legal land.
(17) Greco's dance is not an easy option, living as it does like a Beckett character in strange, uncharted territory.
(18) The stakes are terribly high as operators enter uncharted territory in the broadband world.
(19) Twice more he struck as if he was securing a flagpole into the soil of a previously uncharted land.
(20) So again, I'd stress that we're going into uncharted territory with reefs and the environment.
unexplored
undiscovered
unmapped
untraveled
unfamiliar
untrodden
unplumbed
unknown
The Big Bang Theory Season 10, Episode 4
You know, this is uncharted territory for both of us.