the secret police

: kept from knowledge or view : hidden

: marked by the habit of discretion : closemouthed

: working with hidden aims or methods : undercover

: something kept hidden or unexplained : mystery

: something kept from the knowledge of others or shared only confidentially with a few

: a method, formula, or process used in an art or operation and divulged only to those of one's own company or craft : trade secret

: govern

: to control, regulate, or keep in order by use of police

: to make clean and put in order

: the internal organization or regulation of a political unit through exercise of governmental powers especially with respect to general comfort, health, morals, safety, or prosperity

: control and regulation of affairs affecting the general order and welfare of any unit or area

: the system of laws for effecting such control