secretmode
nounUK /ˈsiː.krət məʊd/
US /ˈsiː.krət moʊd/
A special way to use something that keeps it hidden from other people.
She turned on secretmode so her little brother couldn't see her game.
OTHER MEANINGS
2. A setting on a device that stops it from saving what you do.
He used secretmode on the tablet so no one could see his searches.
3. A way of playing a game where other players cannot find you.
In secretmode, her friends couldn't tell she was online.
4. A quiet, hidden way of doing something so nobody notices.
The kids moved in secretmode to surprise their dad.