(logic) The rule that states that not all propositions are true, the opposite of trivialism.

A quasi-Masonic fraternity for men.

A Roman Catholic fraternity for men, founded by a Roman Catholic priest named Michael McGivney.

A Roman Catholic lay fraternity for men.

(former name) The Commonwealth of Nations.

The name of the British state when Great Britain and Ireland were a republic ruled by Oliver Cromwell.

(historical) The British state when Great Britain and Ireland were a republic ruled by Oliver Cromwell.

The Irish state under the English Kings/Queens when the King/Queen of England held the ex officio title Lord of Ireland from the time Pope Adrian IV granted the title to King Henry II of England, until the time King Henry VIII left the Roman Catholic Church and elevated his Irish title to King of Ireland and the Irish state's status from a lordship to a kingdom.

(historical, 1870s, derogatory) The policy, advocated by a group of German political economists, of state aid for the betterment of the working classes.

(humorous) A fictitious disorder associated with the tiredness, irritability or distractedness that comes from returning to work after the weekend.