A person who resolves cases of conscience or moral duty.
One who is skilled in, or given to, casuistry.
Someone who attempts to specify exact and precise rules for the direction of every circumstance of behaviour.
Someone who asks a question or sets a problem.
Someone who, or something which, poses; a person who sets their body in a fixed position, such as for photography or painting.
A poseur; someone who affects some behaviour, style, attitude or other condition, often to impress or influence others.
A particularly difficult question or puzzle.