(n.) The quality of being elfish.

aggravation annoyance bad news bedevilment bitchiness bore bother botheration bothersomeness crashing bore cussedness devilishness devilry deviltry diablerie difficulty dogging downer drag elfishness evil intent exasperation foolishness harassment harmfulness harrying hatefulness headache high spirits hounding impishness iniquitousness invidiousness maleficence malice malice aforethought malice prepense maliciousness malignance malignancy malignity meanness mischief mischievousness molestation nastiness noxiousness nuisance orneriness persecution pest playfulness prankishness pranksomeness problem puckishness roguery roguishness scampishness sportiveness trial trouble vexation vexatiousness waggery waggishness wickedness worriment worry youthful spirits