Sub-rosa and Under wraps

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

Under wraps and sub-rosa are semantically related. in secret topic. In some cases you can use "Under wraps" instead an adjective phrase "Sub-rosa", when it comes to topics like sneaky, deceitful, underhand, stealthy.

Under wraps adjective - Kept secret.

Sub-rosa and under wraps are semantically related. Sometimes you can use "Sub-rosa" instead an adjective phrase "Under wraps".