poser

One who poses or puts questions; one who questions or interrogates closely; an examiner.

A question that poses or puzzles; a puzzling or difficult question or matter.

One who, or that which, puzzles; a difficult or inexplicable question or fact.

A particularly difficult question or puzzle.

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 or baffling question or problem

a person who habitually pretends to be something he is not

a person who poses for a photographer or painter or sculptor