rapscallion /ɹæpˈskæljən/adjective 1noun 1forms 3 adjective1 •Disreputable, roguish.[H]e is dressed in such a rapscallion manner that the people would think you were talking to a house-breaker. — 1869 noun1 •(old-fashioned) A rascal, scamp, rogue, or scoundrel.She was the sister who had remained within the pale; I, the rapscallion of a brother whose vagaries were trying to his relations. — 1901 formsrapscallions · more rapscallion · most rapscallion