undercoverscheme
nounUK /ˌʌndəˈkʌvə skiːm/
US /ˌʌndərˈkʌvər skiːm/
A secret plan that people keep hidden from others.
The spies had an undercoverscheme to sneak into the castle.
OTHER MEANINGS
2. A sneaky way to do something without anyone noticing.
Their undercoverscheme helped them win the game quietly.
3. A plan made by secret agents.
The undercoverscheme was written in a code only agents could read.
4. A hidden trick used to surprise someone.
He used an undercoverscheme to plan the surprise party.