← BackshareGuessimpishly/ˈɪmpɪʃli/adverbIn a playful, mischievous way.He impishly winked at his friend across the room.She impishly hid her brother's keys just to tease him.The cat impishly batted at the dangling string.SynonymsmischievouslyroguishlynaughtilyplayfullyAntonymsseriouslysolemnly