Thieves' cant is a cant, cryptolect, or argot which was formerly used by thieves, beggars, and hustlers of various kinds in Great Britain and to a lesser extent in other English-speaking countries. It is now mostly obsolete and used in literature and fantasy role-playing, although individual terms continue to be used in the criminal subcultures of Britain and the United States.

Thomas Dekker was an English Elizabethan dramatist and pamphleteer, a versatile and prolific writer, whose career spanned several decades and brought him into contact with many of the period's most famous dramatists.