Search Result for "impishness": 
Wordnet 3.0

NOUN (1)

1. the trait of behaving like an imp;
[syn: impishness, mischievousness, puckishness, whimsicality]



WordNet (r) 3.0 (2006):

impishness
    n 1: the trait of behaving like an imp [syn: impishness,
         mischievousness, puckishness, whimsicality]