15 letters · 25 points in Scrabble
noun an attribute of mischievous children
noun the trait of behaving like an imp
noun reckless or malicious behavior that causes discomfort or annoyance in others
originEtymology tree English mischievous Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English mischievousness From mischievous + -ness.
Etymology from Wiktionary, CC BY-SA 3.0