As a noun impishness
is the state or quality of being impish; mischievousness.
As an adjective prankish is
given to or characterized by impishness or playfulness; mischievous.
impishness
English
Noun
(-)
The state or quality of being impish; mischievousness.
prankish
English
Adjective
(
en adjective)
Given to or characterized by impishness or playfulness; mischievous.
Synonyms
* (naughtily or annoyingly playful) impish, mischievous, pixilated, implike, puckish