Sub-rosa and Unknown

Sub-rosa adjective - Designed and carried out secretly or confidentially.

Unknown and sub-rosa are semantically related. In some cases you can use "Unknown" instead an adjective phrase "Sub-rosa".

Unknown adjective - Happening or existing without one's knowledge.

Sub-rosa and unknown are semantically related. Sometimes you can use "Sub-rosa" instead an adjective "Unknown".

Nearby Words: unknowable, unknowing