Which word would best describe someone who is often involved in violent behavior or crime?

The term "ruffian" specifically refers to a person who engages in violent or criminal behavior, often characterized by a rough and aggressive demeanor. This word has historical roots associated with gangs and mischief-makers, suggesting a person who is not just occasionally involved in such acts but is typically seen as a troublemaker or a criminal. The connotation of ruffian implies a sense of lawlessness and a propensity for engaging in violence or antisocial behavior, making it the most fitting choice for describing someone frequently involved in crime.

In contrast, the other terms do not carry the same implications of violence or criminality. "Retinue" refers to a group of advisors or followers, indicating a supportive social dynamic rather than an individual’s propensity for crime. "Sanctimony" denotes a smug or hypocritical show of religious or moral devotion, unrelated to violence or crime. Lastly, "respite" signifies a break or pause, particularly from something strenuous or unpleasant, which does not connect to the behavior of individuals associated with crime or violence.