Home › Words › R › rascalismrascalismrascalism means the behaviour of a rascal; villainy.Among words judged in Lexicurio's Arena, rascalism ranks #12,911 of 42,749 for Qualifying.EtymologyFrom rascal + -ism.nounThe behaviour of a rascal; villainy.Definitions & examples from Wiktionary (CC BY-SA 3.0).