Any organized group that conceals some of its ritual and other activities from nonmembers.
Webster's New World
Other Word Forms of Secret Society
Secret Society Sentence Examples
At the same time he became a member of the secret society of the Carbonari.
Since the outbreak in May 1896 the Greek government had loyally co-operated with the powers in their efforts for the pacification of the island, but towards the close of the year a secret society known as the Ethnike Hetaeria began to arrogate to itself the direction of Greek foreign policy.
To the Ancient Order of Hibernians none might be admitted but persons of Irish birth or descent, who were Roman Catholics, and whose parents were Roman Catholics; but notwithstanding this requirement, the organization - being a secret society - was under the ban of the Catholic Church.
His murderer, a Fenian acting under the instructions of the secret society to which he belonged, was discovered, and executed in 1869.
A powerful bond of union among the Efik, and one that gives them considerable influence over other tribes, is the secret society known as the Egbo.