Extralegal and Sub-rosa

Extralegal adjective - Not regulated or sanctioned by law.

Sub-rosa and extralegal are semantically related. In some cases you can replace phrase "Sub-rosa" with "Extralegal", this terms are similar.

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

Extralegal and sub-rosa are semantically related. Sometimes you can use "Extralegal" instead an adjective phrase "Sub-rosa".