IMPISH Meaning of IMPISH in English — impishly , adv. — impishness , n./im"pish/ , adj.1. mischievous. 2. of, pertaining to, or characteristic of an imp. [ 1645-55; IMP + -ISH 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012